problem with WlanSetProfileEapXmlUserData

Hi folks, I've been trying to set the settings of my profile using the
function WlanSetProfileEapXmlUserData. The function definition can be
found http://msdn2.microsoft.com/en-us/library/ms706802.aspx
I dont know how the fifth parameter should be sent. I'm using the
definition that I found at
http://msdn2.microsoft.com/en-us/library/bb204662.aspx but I always
receive an error 1206 wich means corrupted profile. Do you know what
could be happening?

Thanks,
Nelson