Solver in Excel - Variable Limitation

Hi All, 

I built a model in Excel to solve 1d Cutlist optimization, model works great and gives optimal results

But when there is complex cutting patterns that results in more than 250 cutting combinations model totally fails

fails due to the limitation of solver to handle more than 250 variables with integer constraints. 

using simplex LP, I created model years ago but unable to use it

Hoping Microsoft has this in the list to fix this limitation in coming versions ?