Problem with typecasting in BuildOps

[Vishvas]

I was trying to generate a build op, which gives you the sum of the values in a decimal column. I could not save that value in a float variable.

float a;

a=indata1.col1;

It throws the following error during compilation.

"Illegal types associated with operator '+': 'float' and 'const class APT_Decimal'."

I even tried to cast this into float and it gives the same error. I also tried changing the datatype of that column to float. But it throws the same error.

Can anybody suggest a solution for this problem.

Arun