JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. ISOAPMessage.enableMergeVariables Syntax Parameters Return Value Sub ISOAPMessage.enableMergeVariables( _ bstrKeepOldVars As String, _ bAdd As Boolean) bstrKeepOldVars [in] Type: String bAdd [in] Type: Boolean This function does not return a value. Copyright © 2020. TIBCO Software Inc. All Rights Reserved.