-Dgenerator.decimal=true not working for existing fields

when I am packaging code using -Dgenerator.decimal=true, the existing Price type field are not changing to BigDecima.

I want that all Price Type fields should take BigDecimal as input. As per the documentation this can be if we compile code using -Dgenerator.decimal=true option.

I used "package -Dgenerator.decimal=true -DskipAT=true" but still Price type fields constructor are taking double field.

I added some custom fields of Price type and those new custom fields constructor are taking BigDecimal value. So It seems that this(-Dgenerator.decimal=true) is working for new fields only.