What is wrong with the following statements? 

if V[h_total=&V[h_amount]]
  set V[h_adaptation] "X"

Both h_total and h_amount have the value 2500, but the Set statement is not executed.

Probably one of the values is "2.500" or "2,500", and the other is "2500". In this case, you can first add 0 to both values, to convert them into a standard format, and then compare them.