Concepts for defining and processing an expression of an enterprise workspace application are presents. Such concepts may associate an expression of an enterprise workspace application with a modified version of the expression and a state flag which is configured to define whether processing of at least part of the expression is to be based on (i.e. employ) the modified version of the expression. In this way, there may be provided concepts for protecting against malicious users setting triggers or overriding function definitions that cause other users to perform unexpected activities.