Bill Time Discount base on MRC amount

Hi Everyone,

I have to create bill time discount, which should update non-currency resources based on MRC amount. This discount should trigger when particular Non Currency Resource is greater than 0.

For example: There product with $100 MRC and NCR1 = 0 and NCR2 = 10 (No end date for Non currency resources). During billing this discount should trigger when NCR2 > 0 and should update NCR1 = 100 (Which is MRC Charge) and NCR2 = 9 (-1 every time) and Currency = -$100.

I have created discount object with BTD event, but trigger is failing and saying NCR2 is 0 and MRC amount is not populating for discount rule.

Same discount object, if i am creating with MRC event, it's working fine.