#define VARSET_LIST_CALLBACK(target, var_name, var_value) CALLBACK(GLOBAL_PROC, GLOBAL_PROC_REF(___callbackvarset), ##target, ##var_name, ##var_value)
//dupe code because dm can't handle 3 level deep macros
#define VARSET_CALLBACK(datum, var, var_value) CALLBACK(GLOBAL_PROC, GLOBAL_PROC_REF(___callbackvarset), ##datum, NAMEOF(##datum, ##var), ##var_value)

/proc/___callbackvarset(list_or_datum, var_name, var_value)
	if(length(list_or_datum))
		list_or_datum[var_name] = var_value
		return
	var/datum/datum = list_or_datum
	if(IsAdminAdvancedProcCall())
		datum.vv_edit_var(var_name, var_value) //same result generally, unless badmemes
	else
		datum.vars[var_name] = var_value