Hello, I would like to know if there is a way for setting the null value for a boolean type attribute using an action workflow. So far I managed to set it to true or false by using function evaluator and using integer values 1 and 0 respectively.

In this context you would delete the attribute value, rather than setting it to NULL.Ahmad Abdel-wahed, Microsoft

Similar question was posted here http://social.technet.microsoft.com/Forums/en-US/ilm2/thread/97746122-bcf5-4f26-b8b4-22152309220f/ but using the powershell.If you want to use workflow, you will have to make a custom one to accomplish this.If the boolean is flow from metaverse to FIM portal, you can edit the FIM MA to allow null in the attribute flow for the specified boolean. In this case, if the metaverse attribute becomes null it is synchronize to null in the portal on next export