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Array of Equations

What I would like to do is take an array of values and change them using a seperate equation on each to get different outputs. I would like to be able to modify the equations on the front panel.
 
lets say I have ten values in an array, and on my front panel I have an array of 10 strings, each string being an equation. I would like to pass the first value through the first equation and put the output value into another array.
 
I can write the equations inside either a formula or expression node but there seems no way to pass it via a string. I have looked at formula nodes and expression nodes and I can't see how to do it. If expresion nodes had a property node then maybe I could add the value through it. Anybody got any ideas
 
nice
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found the answer I can use eval formula node
 
here is the discussion link
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