everything I can find says that if the expression is evaluatated to a positive number it is visible and 0 or negative it is not visible. How does the expression editor handle boolean statments such as "varableA and variableB" if either is positive will it be visible or as the "and" requires do both statments have to be positive for a positive result? I cannot find any documentation on the expression editor that talk about how it evaluates "AND" and "OR" statments and when those expressions are used in the variable field there is no error generated for using them. If anyone has any experience or documentation it would be appreciated.
The why behind the question is I have a View project developed several years ago and I am having several animations visible when not supposed to be or screen errors and the only common factor is that they all have "AND" statments in the visibility but when the HMI project is validate no errors are identified.
Thanks Bill
The why behind the question is I have a View project developed several years ago and I am having several animations visible when not supposed to be or screen errors and the only common factor is that they all have "AND" statments in the visibility but when the HMI project is validate no errors are identified.
Thanks Bill