Clear method

Clears or empties the variable based on an Extended data type, to which you apply the method.

&VarBasedOnExtendedDataType.Clear()

Where:

&VarBasedOnExtendedDataType
Is the Variable name to which the method is applied.

Type returned:
Numeric

Data Types: Cache, ExcelDocument, MailMessage, Properties, WApiApplicationData, WApiFilter, WebSession, MailRecipientCollection, StringCollection, WebSession
Generators: .NET, .NET Framework, Java, Ruby (up to GeneXus X Evolution 3), Visual FoxPro (up to GeneXus X Evolution 3)

This method clears or empties the variable based on an Extended data type, to which you apply the method.

In the case of:

ExcelDocument: It deletes the contents of all cells in the active worksheet.
MailRecipientCollection/StringCollection: It empties the collection. All collection elements are deleted.
WebSession: It clears the web session variables.

Note:This method returns an error code, so it is possible to call it as a function (&Err = &DataType.Clear()).