Hi Neha ,

You calculate total price and check if  condition  greater than 1500 then  delivery charges is rs 40.

I create a demo screen check it.

Demo URl : https://personal-x1ixzlcz.outsystemscloud.com/APITEST/ProductPrice?_ts=637979718038761765

also attach .oml file 

Thanks

hey @Neha Lawange ,

You simply use if widget in your action flow . if (condition, true ,false)

Thanks & regards

barkha