Header level Aggregated value ZPR1, needs to automatic update in the Header Condition Type ZPMO.

[abulhasnat]

Hi Experts,

I would like to know that, I have one item level condition type ZPR1, this condition type (ZPR1) in the header level shown the aggregated value of the each line items consist of the sales order. Now my requirement is that I have 1 header condition type which is ZPMO, I need to pass the ZPR1 value to the ZPMO value automatically.
How can I achieve this in the system. Expecting from your valuable feedback. Screenshot is given below:

Thanks in advance 

Best Regards,
Abul Hasnat