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set aDateTime = aDurationString.convertDurationToDateTime()
set aDateTime = convertDurationToDateTime(LITERAL)

Converts a string having the XML Schema Duration ( format into a DateTime object.

Duration  may be expressed using all the parts of a DateTime type (from year to fractions of a second) and are, therefore, defined as a "six-dimensional space". As the relation between some of the date parts is not fixed (such as the number of days in a month), the order relationship between durations is only partial and the result of a comparison between two durations may be undetermined.
The lexical space of xsd:duration is the format defined by ISO 8601 under the form "PnYnMnDTnHnMnS". The capital letters are delimiters and can be omitted when the corresponding member is not used.

Valid values include "PT1004199059S", "PT130S", "PT2M10S", "P1DT2S", "-P1Y", or "P1Y2M3DT5H20M30.123S".
The following values would be invalid: "1Y" (leading "P" is missing), "P1S" ("T" separator is missing), "P-1Y" (all parts must be positive), "P1M2Y" (parts order is significant and Y must precede M), or "P1Y-1M" (all parts must be positive).

SubstitutablesaString Can be any variable or object attribute having the type String. The format must correspond to the XML Schema Duration format.  
LITERAL String literal. The format must correspond to the XML Schema Duration format.

This example generates a DateTime object that corresponds to the duration of two days. This object can then be used to do time  arithmetic, that is, adding and subtracting durations from dates.
A UML example of how to apply durations can be found in section Arithmetic Operations.

set aDateTime = convertDurationToDateTime ("P2D");
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