Changes in Process Business Language
The comparison operator (==) is no longer allowed outside of boolean expressions.
Boolean var;
var == false; // error reported on version 6
These kind of expressions do not product any effects. If your existing 5.x code fails on version 6 because of this error, you must revisit the code and understand what was the original intention behind it. Most commonly, it was a mistake of using the comparison operator (==) instead of the assignment operator (=).