four dimensional numerical Integration

It's getting really hard to do the 4D integration numerically in MATLAB. I've tried integral(integral3()) nested integral, integral2(integral2()), and another function integralN(). None of these are working. Please help.

[Mike Hosea]

How are we supposed to know what your problem is? Is there an error in your formulation? Is the problem not integrable, or is there a singularity that is too strong? Does it seem to run and just never return? Does it return NaN and say the integration was unsuccessful? So many questions, so little information! How about an example of something that didn't work. The integralN method is the simplest to use, as it does not require use of arrayfun to do the nesting. Please make it complete and self-contained so that a person can copy-paste your code and run it.