Background fit (red line) is not shown on my graph

Just uploaded the text file and code. Background fit is not shown.
If i have made some mistake then please look at it and correct me.

eu_gu_1.txt (44.1 KB) fithisto.C (3.6 KB)

Have a nice day!!!

_ROOT Version:_6.14
Platform: Ubuntu
Compiler: Not Provided

Please stop multiple post you posted that already:

we will look at it