Is there something I can do if he lied in his legal paperwork

soyaddict

He filed a petition seeking a reduction in the child support... which he doesn't really pay anyway. I noticed in the paper work that he stated he is seeking a reduction because he was "laid off and after months obtained a lower paying job". 

 But he wasn't laid off. He voluntarily quit, took out his retirement and spent it all so he could goof off for 6+ months.  Again all this while not paying child support. 

I'm just wondering if the fact that he lied in writing when filing may provide a reason for him to fail in his endeavor. Or if there is something else that I can do to prove why a reduction isn't justified.