How to adjust damage in every map? (skilldamage_db)

[Rizz]

Hello, I have a problem in defining skill damage in skilldamage_db.txt. I want to edit skill damage which will take effect in every map.
 
Previously I put this in skilldamage_db.txt:
MO_FINGEROFFENSIVE,1,15,-60,-60,-60

However, it didn't affect the town/main town map or the reduction didn't occur in the town. It only affected the normal (?), pvp, gvg, and battleground maps.
I hope someone tell me ragarding the solution

[Start_]

MC_MAMMONITE,BL_PC,31,500,500,500,500

 

[Rizz]

Thanks, but after testing it, the setting does not affect the town map. That's the main problem my friend 

[Start_]

Try added mapflag skill_damage to your towns.

[AyenPanda]

how to adjust the skill damage on instances?