2D Interpolation for SOC-OCV Lookup Table

Hallo,

Currently i am working on writing a programme for a 2D Interpolation from a lookup table. I have attached the lookup Table. I am encountering some issues related to this. I am attaching the programme. Can someone please let me know how to rectify these issues. The Programme 'SOCOCVLUT' is working fine. There i am building a struct. The Programme 'TwoDInterpolation1' is the one which is not working. Any help will be appreciated.