How to get a decimal value from database?

I’m unable to get decimal value from database. Output result was blank for decimal values.
Whole numbers are working properly, facing issue only with decimal values.

In Get collection (GET) response schema, variable key property should be as follows based on their values,

For string – stringValue
For interger – integerValue
For decimal – doubleValue

However, a particular variable has to be either integer or double it’ll not accept both the type of values whereas the same problem occurs.

Thanks in advance for better solutions.