Add Promotion amount to Merit in Comp statement

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Hello - For our india compensation plan, on the change statement until last year it only included Merit amount but this year we added promotion on worksheet as well.  I need to update the statement to display the total value  (Merit + Promotion) and I am brand new learner on this.  I am unable to figure out how to add this value in the attached screenshot.  How can I update INR expression that brings the Merit amount currently so that I can update that to include promotion amount as well? 

Any input or guided steps would be highly appreciated.

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