macros in Mutants & masterminds

how would i write a macro for an aoe damage power to make it a save rather than a to hit

Can you go into more detail?  I don't have and haven't played Mutants & Masterminds, so I don't know the mechanics, but I could still help with the macro side of things.

so you can force enemies like 5e to make dodge saves against AoE damage powers. in my case, I explode and force people near me to make a DC (10+" ranks in that power") on a fail, they make a toughness check against a DC (15+ranks in that power) or are hurt they have it automatically put in a targeted attack (like a firebolt would be used in 5e) but i need a save

Ah, so this is really more of a character sheet specific question?  You want to modify the Roll Template output to include the save?

yeah, sorry im new to Roll20 I want to replace the "to-hit" with a save

No worries.  So, the screenshot you have there is what you currently have for your power?  That part with {{Result= [[@{die_type}cs>@{crit_rate} + @{bonus} +@{Total_Attack_Mod}]] }}  Is going to be the part you need to replace.  Without knowing the system or the sheet, I can't say precisely what you need to put there, but it will look something like: {{Result= [[@{Some_base_DC} + @{some_power_DC} + @{maybe_something_else}]] DC }} You could even change Result = to be something like Save DC = if you wanted (Since this is actually using the default template).  What the attributes will be will depend on your sheet.  If you have other powers with a save that you can look at, you could probably figure them out, or perhaps your GM can help find them.

thank you for the help, ill see if i can get it working with that

This is the macro I used for Scarlet Mist. She has an area affliction attack rank 11, called drown in blood.  @{Scarlet Mist|who-combat} &{template:default} {{name= Drown in Blood}} {{vs. Dodge = DC [[@{aoe_save_base} + @{drown_in_blood_rank} + @{Scarlet Mist|Total_Effect_Mod}]]}}  {{Passed Save Effect= DC [[@{Cstm_Will_Fort_Save_Base} + ((@{drown_in_blood_rank} + @{Scarlet Mist|Total_Effect_Mod})*.5)]]}} {{Failed Save Effect= DC [[@{Cstm_Will_Fort_Save_Base} + @{drown_in_blood_rank} + @{Scarlet Mist|Total_Effect_Mod}]]}} {{Notes= Close, Progressive Shapeable Area Affliction 11}} This is sort of janky. I couldn't figure out how to use effect_ranks and save_base in my macro so I just made three new attributes in int the attributes & Abilities tab of my character sheet called:  aoe_save_base,  drown_in_blood_rank and  Cstm_Will_Fort_Save_Base. The  Total_Effect_Mod is the value that appears at the bottom of the effect collumn in the part of the character sheet that enter numbers for "Accurate Attack", "All-ou Attack", etc.