Thank you Sir for replying and correcting my code according to you.
But the error: ERROR:: Binary “==” No operator found is ralated to the code because while adding the FTransform values are checked for == or != to compare before adding a unique value because the operator == is not available for Comparing Transforms.
I can show an example: FTransform Comparison Issue
This is related to this Issue and I have a solution on this post for this issue but it freez the engine.