Can I show Indian only salary and not UK per DIEM

[pupulu]

Hello All,
I am on WP in UK for the last 5 months and now want to apply for Tier 1.
I receive my Indian salary in India(800000INR/Anm) and UK Per DIEM and other expenses(2000 GBP/mth).

I want to show my Indian salary as the only source of income and not the UK per DIEM as I cannot show the proof(Company will not provide any documented proof).

Someone told me that if I have to apply for Tier 1 while being in UK then I have to select "Select the country where you earned the money" in the points calculator as UK.In that case the point that I get is zero.

My question is should I select India or UK ?

Thanks
p