>>Hi,
>>
>>I have a function that receives a parameter, an array. The code is as follows:
>>
>>
>>Function MyFunc
>>LPARAMETERS tParam1, tParam2, taMyArray
>>EXTERNAL ARRAY taMyArray
>>
>>
>>I need to add the 4th parameter. In the case of the 4th parameter the 3rd is not necessary. If I pass the 3rd parameter (taMyArray) set to NULL will I have a problem? Since the next line (EXTERNAL ARRAY taMyArray) expects this parameter to be an array.
>
>You could as well pass something else as 3rd parameter and then instead of checking whether it's null, check whether it's an array or not.
Thank you. I thought about it too. But since I am not sure if whatever approach I would use to check for array will work, I decided to use NULL. Isnull() is so easy and reliable.
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