The sole issue presented by this appeal is whether the circuit court judge had jurisdiction under Code § 19.2-303 to consider a defendant’s motion to modify his sentence while the defendant was in the custody of the Federal Bureau of Prisons. We hold that the judge did have jurisdiction because the evidence did not establish that the defendant had been transferred to the custody of the Virginia Department of Corrections.
I.
In 1997, a judge of the circuit court convicted Demetrius L. Neely, upon his guilty plea, for possession of cocaine. The judge sentenced Neely to two years in prison, suspended the prison sentence in its entirety, and ordered supervised probation. During Neely’s period of probation, a probation officer initiated a revocation proceeding because Neely had been arrested on federal charges of bank robbery and use of a *241firearm. After Neely pled guilty and was sentenced in federal court, a judge of the circuit court revoked Neely’s suspended sentence and imposed the prison sentence of two years “to run consecutively with all other sentences.”
Almost four years after the circuit judge revoked the suspended sentence, Neely filed a motion in the circuit court seeking a modification of his sentence. Neely, who was in federal custody, indicated that “a detainer has been placed against him in order that he may not be released before fulfilling his obligation to the Commonwealth of Virginia,” and he alleged circumstances that he believed warranted a modification of his sentence. The trial judge’s order found that Neely was “in the custody of the Department of Corrections” and ruled, therefore, that “the court, pursuant to Rule 1:1 does not have jurisdiction to hear this matter.” Neely appeals from this ruling.
II.
In pertinent part, Rule 1:1 of the Rules of the Supreme Court of Virginia provides that “[a]ll final judgments, orders, and decrees, irrespective of terms of court, shall remain under the control of the trial court and subject to be modified, vacated, or suspended for twenty-one days after the date of entry, and no longer.” The legislature, however, has statutorily enacted several “limited exceptions to the preclusive effect of Rule 1:1.” Davis v. Mullins, 251 Va. 141, 149, 466 S.E.2d 90, 94 (1996). “Code § 19.2-303 is one of those exceptions.” Ziats v. Commonwealth, 42 Va.App. 133, 138, 590 S.E.2d 117, 120 (2003). That statute provides, in pertinent part, as follows:
If a person has been sentenced for a felony to the Department of Corrections but has not actually been transferred to a receiving unit of the Department, the court which heard the case, if it appears compatible with the public interest and there are circumstances in mitigation of the offense, may, at any time before the person is transferred to the Department, suspend or otherwise modify the *242unserved portion of such a sentence. The court may place the person on probation for such time as the court shall determine.
Code § 19.2-303.
Neely argues that he had “not actually been transferred to a receiving unit of the Department [of Corrections].” Id. Thus, he contends the exception to Rule 1:1 that is contained in Code § 19.2-303 is applicable to his motion to modify his sentence. The Commonwealth argues, however, that a literal reading of the statute “potentially would extend a trial court’s jurisdiction for several decades.” Citing Ragan v. Woodcroft Village Apartments, 255 Va. 322, 327-28, 497 S.E.2d 740, 743 (1998), the Commonwealth also argues that the trial judge’s inability to order a prisoner’s transfer from the place of his federal confinement to the state court for a hearing renders a literal reading of the statute “a vain and useless thing.” Thus, the Commonwealth contends that the General Assembly intended the exception to apply only to persons confined in jail and “surely did not intend to sanction such an ineffectual, peculiar arrangement.”
Initially, we note that the trial judge made a notation that Neely “is no longer in local jail,” and he informed Neely “that once an individual is in a State Correctional Facility I am powerless to act after twenty-one (21) days from the date of conviction.” The Commonwealth concedes, however, that Neely is in a federal prison. Indeed, the record establishes that Neely was on probation for his felony conviction when he was arrested and taken in custody on federal charges, and he was not in the Department’s custody. No evidence in the record establishes that Neely has ever been transferred from the federal prison system to custody of the Department.
The principle is well established that “[w]here the legislature has used words of a plain and definite import [in a statute] the courts cannot put upon them a construction which amounts to holding the legislature did not mean what it has actually expressed.” Watkins v. Hall, 161 Va. 924, 930, 172 S.E. 445, 447 (1934). See also Williams v. Commonwealth, *243265 Va. 268, 271, 576 S.E.2d 468, 470 (2003) (holding that “[w]hen the language of a statue is unambiguous, courts are bound by the plain meaning of that language and may not assign a construction that amounts to holding that the General Assembly did not mean what it actually has stated”).
By its express terms, Code § 19.2-303 permits the trial court, in cases where the defendant “has been sentenced for a felony to the Department of Corrections but has not actually been transferred to ... the Department,” to retain jurisdiction beyond the twenty-one-day limit of Rule 1:1 to “suspend or otherwise modify the unserved portion of such a sentence.”
Patterson v. Commonwealth, 39 Va.App. 610, 617, 575 S.E.2d 583, 586 (2003).
Although Neely was not in a local jail, Code § 19.2-303 does not premise jurisdiction to modify a sentence upon a defendant’s presence in a local jail. The relevant provision of Code § 19.2-303 expressly confers jurisdiction when the defendant “has been sentenced for a felony to the Department of Corrections but has not actually been transferred to a receiving unit of the Department.” Code § 19.2-303 plainly and unambiguously provides the trial judge with jurisdiction to consider Neely’s motion, and it needs no interpretative construction.
We have no basis upon which to conclude that the legislature did not mean what it unambiguously wrote in Code § 19.2-303. If a defendant has not been transferred to the custody of the Department after conviction, the passage of time is not a factor that impacts upon the trial judge’s jurisdiction to exercise his statutory grant of power under Code § 19.2-303. See Robertson v. Superintendent of the Wise Corr. Unit, 248 Va. 232, 234-35, 445 S.E.2d 116, 117 (1994) (noting that the trial judge retained jurisdiction after the defendant had not been transferred to the Department after twelve months). The legislative authority to consider the motion is not time-based but, rather, is statutorily defeated only by the transfer of the defendant to the Department. *244Although the legislature could have chosen a different policy, clearly it did not do so. Moreover, we have held that “[t]he purposes of Code § 19.2-303 are rehabilitative in nature,” Esparza v. Commonwealth, 29 Va.App. 600, 607, 513 S.E.2d 885, 888 (1999), and should be construed liberally in order to provide trial judges with the means of encouraging the defendant’s rehabilitation. Patterson, 39 Va.App. at 616, 575 S.E.2d at 586. By limiting the trial judge’s jurisdiction to those cases in which the defendant “has not actually been transferred to a receiving unit of the Department,” Code § 19.2-303, the legislature left in place a variety of custodial circumstances in which the trial judge was at liberty to suspend or otherwise modify the unserved portion of a defendant’s sentence “if it appears compatible with the public interest and there are circumstances in mitigation of the offense.” Id.1
For these reasons, we hold that the evidence does not support the trial judge’s finding that Neely was “in a State Correctional Facility,” and we further hold that the trial judge erred in ruling that Rule 1:1 deprived him of jurisdiction to entertain Neely’s motion to modify his sentence. We, therefore, reverse the decision and remand to the trial judge for consideration of Neely’s motion pursuant to the factors contained in Code § 19.2-303.
Reversed and remanded.
. The Commonwealth argues without any supporting authority that, by issuing a detainer "to insure that Neely would be put in the state correctional system upon his release,” the Department rendered Neely "in the custody of the Department.” We find no authority to support that assertion, and, furthermore, we note that Code § 19.2-303 confers jurisdiction upon the trial judge when the defendant "has not actually been transferred to ... the Department.” (Emphasis added.)