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dynamic listbox problem

MEL, SQL, Oracle

Last Post by Anonymous 1 second ago

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ken.takenaka

(@ken-takenaka)

Posts: 212

Reputable Member

Topic starter

I wrote a function and the definition is as follows
{fn MATCHDATES(var1,var2,var3){

I am able to use var1 and var2 in the function but at the end, I am trying to call the results into a dynamic listbox by putting:

var3 = result

at the end of the function. The dynamic listbox calls the function {MATCHDATES("HPI INFO 1",document.previousdate,document.listbox)}

but it does not work. within the function definition, if all I do is change it to document.listbox=result, the function works. Any ideas why this could be? I need to use the function multiple times within the form with different results so I need to make this work. Thanks,

Posted : June 22, 2015 1:34 pm

Lee

(@lee-cooper)

Posts: 348

Reputable Member

Could be a couple of issues.

1) Using document variables inside functions can produce unreliable results unless they are declared as global values. If using VFE, check the 'Make available to other forms' check box and ensure they are uniquely name to prevent collisions.

2) When assigning a value from a function, you have two options:

Direct assignment, which you found already works but really should be reserved for global variable assignment as it has limited application otherwise
Use the function to return the value to the variable via the ‘return’ statement.

i. i.e. return result

ii. To accomplish this, you need to assign the returned result to Var3 during the function call itself (outside of the function).

DOCUMENT.VAR3 = MATCHDATES(var1,var2)

iii. Using this approach, you maximize the utility of the function.

Posted : June 22, 2015 5:18 pm

ken.takenaka

(@ken-takenaka)

Posts: 212

Reputable Member

Topic starter

Thank you so much. This worked perfectly

Posted : July 1, 2015 1:06 pm

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