Execption when using Spark Pro NET Platform

Hi Spark Platform supporters !

I have an issue when i use spark platform 

When i calll two apis at the same time to one model in "InitMap" method raise Exception "Additional information: An item with the same key has already been added."

The reason is
- In InitMap method use same model and map variable has same column 

Now, i don't know to reason this problem

Please support and fix issue in Spark Platform !