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Can't Decrease Date?

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  • Can't Decrease Date?

    I have a form on which there are two fields which display the content of variables.
    1 Variable is named StartDate and The other is EndDate. they are both global.

    In the form are 2 buttons. 1 to increase the EndDate by one month with each click and the other to decrease the date 1 month per click.

    The increase date button works using =addmonths(Var->EndDate,1) followed by refresh fields.

    Can someone tell me the function to use to decrease the date. I tried =addmonths(Var->EndDate,-1) (note the -1) but it throws an error. There doesn't seem to be a decmonths or submonths function??

  • #2
    RE: Can't Decrease Date?

    This works in the interactive window:

    dim enddate as d
    = {01/13/2004}

    = {02/13/2004}

    = {12/13/2003}

    Try dropping the var->enddate in favor of enddate.


    • #3
      RE: Can't Decrease Date?


      I appreciate your response. What is so exasperating about this program is that =addmonths(EndDate,1) but =addmonths(EndDate,-1) does not!

      I tried your suggestion and the error message says:

      Script: OnPush Line 9
      variable type mismatch

      The error is exactly the same with or without the var->


      any other ideas?


      • #4
        RE: Can't Decrease Date?

        I think it's because you are assigning a character value determined by the A5_eval_expression() function to a date variable.


        • #5
          RE: Can't Decrease Date?

          I'm not clear how you are getting the script attached to the button. Start over, create a new button, use xbasic editor, put the code

          enddate = addmonths(enddate,-1)

          in the box, finish the button, save the form, and it should work. Have no idea how this is getting translated into

          There can be only one.


          • #6
            RE: Can't Decrease Date?


            Thank you. That worked. Just FYI, I used the script editor to create the function script and A5 created that function with the "C" in it I believe the script editor created the problem.

            I guess I just learned "another" work around.

            Thank you very much for the coaching.