[SMARTY] cycling

is there a way to use a smarty variable as a cycle parameter? tried:

{cycle values=0,stepX assign='posX' }
{cycle values=0,$stepX assign='posX' }
{cycle values=0,`$stepX` assign='posX' }
{cycle values='0,`$stepX`' assign='posX' }

but i get the values 0 and "stepX" as a string...

otherwise I guess i can do this but it seems verbose:

{cycle values='0,1' assign='posX' }
{assign var=posX value=$posX*$stepX}

thanks in advance!

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