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Using a variable in a field rule

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    Using a variable in a field rule

    I have a variable that I call income. I made it global and equal to $3,500. I want it to start with this value when the database opens so I've named the script autoexec. I used the code editor to do this. I've used the interactive window of the code editor to check that the variable is okay by typing ? income and it returns the value of $3,500 that I've assigned it.

    I will use this variable to calculate the value of several fields. The way I'm trying to control the value of the fields is with the fields rules. I go to the fields rules of the field I want to control and I tell it that I want an extended field type calculated and in the calculated field expression box I type income + 500 but when I try to save it I get the error message "No such field income + 500"

    When I get into the expression builder I I can actually see at the bottom of the expression builder that the result is 4000 Type: N , But I can't save it.

    Any ideas regarding what I'm doing wrong.

    Re: Using a variable in a field rule

    Instead of income try Var->income.

    This is what you get when you go to F6 on the left of the expression Builder which gives you a variable list, one for each scope. Then choose your variable.
    Tim Kiebert
    Eagle Creek Citrus
    A complex system that does not work is invariably found to have evolved from a simpler system that worked just fine.


      Re: Using a variable in a field rule

      Thanks it worked. I was a little confused with your explanation at first because my expression builder doesn't show variables F6 on the left. I only show Field Values F2


        Re: Using a variable in a field rule

        Thanks it worked. I was a little confused with your explanation at first because my expression builder doesn't show variables F6 on the left although hitting the F6 key brings up the Select Variable box. I only show Field Names F2, Field Values F5, Function F4, System Field F7 and Library Entry F9. I clicked on the help for the expression builder and the picture shows that I am also missing calculated Fields F5. Is there a way to have these two show with the rest on the left of the expression builder?


          Re: Using a variable in a field rule

          Make sure the scope of the two is such that they can be used in the present context. Only calculated fields for the current table would be used in that table's field rules. Only global variables would be used.
          There can be only one.