How to configure key figure of type sum?

img1.jpgimg2.jpgimg3.jpgimg4.jpgI would like to be able to add the column "Objetivo mes" and Use tis with the same behavior that has the standard key figure counter, when I remove the rows it shows the total, but in the case of my custom key figure this one doesn't add up and shows me instead a wrong amount. I Attach a picture of my report with the rows (Img1) and the sum is displayed correctly, I attach another print when I remove the rows (Img2) and the sum is displayed incorrectly. I Attach a picture of the configuration of my key figure (img3), which It is based on another custom key figure (img4).

Thanks.