Use string value of variable as function output target

I am trying to iteratively run a function, putting the output to a variable of the form 'CMi', where 'i' is an integer. I can easily work with variables of this form by running:

>>> varName = strcat('CM',i)

I am strugling, however, to put the value 'CMi' as the output for a function. In particular:

>>> [varName1, varName2] = function(inputs)

redefines my variable names, and:

>>> [strcat('CM',ii)] = function(inputs)

redefines strcat. How can I print the string value of varName as the target output variable name for a function? Thanks in advance for your assistance!