NX Law Curve by equation is not creating a curve

Expression If / Then / Else did not work

 The problem where the law curve does not correctly update in NX 2206  is fixed in release NX 2306, where the "if" and "else" are no longer case sensitive.

For versions earlier to that fix, the formula must first be edited and the "then" removed from the expression formula, so it has the form "if () () else ()".