How to concatenate a "name.target" with string?

Question

Hello, how are you?
I have this issue:
I have a function -let's call this function "dad", that receives a parameter -let's call it "parameter". Inside dad function, I need to concatenate parameter with a string, to call a function outside function dad. Example:
function dad (parameter) {
parameter.target.onPress = trace (parameter.target  + "_animation") --> this returns "_level0.button1_animation" which is the same as "button1_animation" right?
but when i use it to call a function outside it doesnt work:
parameter.target.onPress = parameter.target + "_animation" ; --> doesn't work.
parameter.target.onPress = [parameter.target + "_animation"] ; --> doesn't work.
but this does work:
parameter.target.onPress = button1_animation
function button1_animation {
here i have a tween
All i wanna do, is concatenate parameter.target with a string, to call a function outside! is it possible ?
thanks in advance

Answer 1

Ned, Thanks.
I dont want to treat the string as a function, because I already have the function "button1_animation" outside. I need to call that function  when i do parameter.target.onPress where parameter is button1, button2, button3 (i am passing to the parameter an array of buttons, and i need each button to call it's own function (button1_animation, button2_animation, an so on...) this functions are outside the function  that receives "parameter".
I finally could do it this way:
parameter.target.onPress = eval[parameter.target_name + "_animation"]
i really appreciate the time you took on helping me. Thank you very much.