Capital gain 54 f - combining gain with home loan

Hi Experts ,

 Section 54F applicable on value of property or the used amount from Capital Gain ?  

For example , I got capital gain of 1 crore . I purchased a residential property for 1 crore where half of the money(50 laks)  was taken as Home loan. I used other 50 laks for buying a vehicle.  Now  some tax experts say I don't need to pay the capital gain as the value of property is 1crore and some others feel I should pay for 50 laks

Please share your views . Do I need to pay tax for 50 laks or I don't need to pay as the residential property value is 1crore

Regards

Shibu