Windchill RV&S Gateway Export- issue with field name while exporting

I am using PTC RV&S (formerly Integrity Lifecycle Manager) Release 12.5 and Datecode12.5.0.0 We are working on a migration project. Currently we are facing some issue with Gateway Export. Here are the errors that I faced For few of the field names we have parenthesis(), so when we include that field name in custom template in a if condition, there we are getting error while exporting. For Example:- Field Name:- Suspect Trace Count(Calculation) For this field name we are getting and error saying... Field name must be specified in { and }: {Suspect Trace Count. Also we have few more fields which is having Parenthesis ( ), so wherever we have that ( ) symbol, it is troughing the error there while exporting.