LoadVars OnLoad error message

Question

I'm having trouble using the onload method in the following
code. I keep receiving the error message, "Left side of assignment
operator must be variable or property" on the line of code that
reads:
contactLV.onLoad(success) = function() {
Below is the code from the frame:

Answer 1

this[_parent.fields_descriptions
[1]]
doesn't makes sense when this refers to sendButton and your
array is defined on the timeline that contains sendButton.
if your_name, for example, is an object, you would use the
following to resolve "your_name" into the object:
this._parent[this._parent.fields_descriptions[1]];