The dateTimeLib.timestampValue() system function returns a TIMESTAMP value based on a string that follows the pattern: "yyyyMMddHHmmss". EGL maintains this function for compatibility with earlier versions. For new code, you can simply assign a string to a TIMESTAMP variable. See "Assignment compatibility in EGL."
The variable to which you assign the return value of the function must be a TIMESTAMP with the mask "yyyyMMddHHmmss". If you want to use a TIMESTAMP variable with a different mask than "yyyyMMddHHmmss", use dateTimeLib.timestampValueWithPattern().
dateTimeLib.timestampValue(timestampAsString STRING? in) returns (result TIMESTAMP?)