did you try to switch this "Zoomfactor" property node to "write"?
(And did you read the error description in the context help when you move the mouse over the broken wire?)
You have conected output max and min to an output of property Node .
And i already try to change it to write and its works .:)
Can you give the explanation why i should change to write ?
I guess you want to set (aka "write") the ZoomFactor: then you need to set that property node to "write" access…