Multiple GDMF not working

If I select one Global Damage Modifier Field , it works. But if I select two or more, doesn't works. The Global ATTACK MF works well.

You need to get rid of the + signs - the sheet already puts these in so you're ending up with a + + which breaks the math. It also automatically puts the name of the modifier in as an inline tag, so you may want to remove it from the damage type, or you'll get a very long output when you use multiple sources. You could also change your Hexblade's Curse to @{pb} if you wish, that will mean you don't need to change it when you hit level 9.

Using attack Curse Bringer do the same result. Do not show GDMF.

I found the solution. Is about the '+' in GDMF. Is not necessary because the number already positive. Thank you!