>The values of these variable are populated in the Split_Name function, but they still are empty after the function runs. I must be not using the reference correctly.
>
>

>NewFirstName = ''
>NewMidName = ''
>NewLastName = ''
>
>cLastFirst = split_name(Schedule.s_Pat_Name, @NewFirstName, @NewMidName, @NewLastName)
>
>
>
>FUNCTION split_name
>
>	LPARAMETERS tcName , taNewFirstName, taNewMidName, taNewLastName
>
>	(Other stuff going on here)
>
>	NewFirstName = SomeNewValue
>	NewMidName = SomeNewValue
>	NewLastName = SomeNewValue
>
>	RETURN
>
>

Assign your new values to the parameters, not to the variables.

E.g. taNewFirstName = SomeNewValue, etc.

BTW, why do you name your parameters ta instead of tc ? ta indicates an array, and this is not your case.