Date function does not evaluate cells

Hi,

I need to execute a rule that evaluates a date type measure (with two dimensions in its BI) with the following rule:

measure = date("20170902","%Y%m%d")

The mace does not return errors, but it does not evaluate cells. The log looks like this:

<I 2018Feb05 14:44:15.906> Calculating measure = date("20170902","%Y%m%d")
<D 2018Feb05 14:44:15.906> EvalLoopHelper::initIter (measure%1)
<I 2018Feb05 14:44:15.906>
<D 2018Feb05 14:44:15.906> 0 cells evaluated.

Is there something wrong with the rule?

Thanks,

Lorenzo