Here is the problem boiled down to a simple example. Point is that variable "a" is made a local variable in the loop but for the condition of the while-loop the first time the worksheet variable "a" should be used which is not done in Prime3. Here "a" is treated as a local variable from the very beginning and as a local variable defaults to zero the while loop is never entered.
The problem only occurs with the while-loop. If the loop is replaced by an if-statement, it works in Prime 3, too.
Prime 2:
Prime 3:
Thats strange - I would call it a Prime3 bug and you should open a call and report it to PTC.
The file you sent is in Prime 2 format and so I was able confirm what you have reported - it works in P2 and fails in P3.
In P3 at least two variables are treated as being zero inside the program block - therfore the wrong result 0. I am not sure what the problem is - labelling or the units.
But if you redifine these two variable at the top of the program P3 yields the same results as P2. I must confess that I don't really know why this trick works and it should not be necessary. Its also unclear why its not necessary for the other global worksheet variables used in your program. The attached file is in P3 format.
