Custom validation not working in a webview

I have a custom validation that for some reason I can't get to work in  a webview but is working fine in the vCO client.  I am doing quite a few of these and all the others are working fine.  The custom validation has a fairly long name to the action.  I also pass the validtion 3 parameters which are all arrays.  To troubleshoot it I simply set the validtion routine to spit back a string with each of the array lengths.  This error pops up fine and displays all of the arrays fine in the vCO client but when I try to run it from the webview I get nothing returned.