Macro for attacking multiple enemies/ AoE attacks.

Hello I've been helping my dm creating macros and designing his own custom sistem. We've come up with a set of macros for attacking and casting magic. We have run into a wall when trying to create a way to cast Area of Effect attacks. So far, our magic attack macro looks something like this: /em lanza magia a @{target|Character_Name} &{template:default} {{name=?{Elemento|Hielo|Fuego|Rayo|Hielo}}} {{Impactar=Auto Impacto!}}{{Critico=[[1d100]] vs [[{{(@{target|suerte} - @{selected|suerte}),1}<0}*((@{selected|suerte} - @{target|suerte})-5)+5]]}}{{dmg=[[  {{( [[ ((1d30 /100) + 0.85) * ( (@{selected|Poder Mágico}*@{selected|Poder Mágico}) - ((@{TARGET|Def. Mágica}/2)*(@{TARGET|Def. Mágica}/2)) ) ]] ), (-3) }>0} * ceil( [[ ((1d30 /100) + 0.85) * ( (@{selected|Poder Mágico}*@{selected|Poder Mágico}) - ((@{TARGET|Def. Mágica}/2)*(@{TARGET|Def. Mágica}/2)) ) ]] ) ]] daño de ?{Elemento}}}{{PM=6}} It first asks you for the element of the magic and then compares a d100 to check if the attack is a crit and afterwards shows you the damage you inflict on the target enemy with a 30% variance. We're now trying to create a way to cast magic in an area, thus hitting more than one enemy. Is there any way to create a macro that will ask you how many enemies your aoe would hit and then launch the magic attack macro as many times as the input answer? Or at least something to that effect? Thank you very much for your help!