How to do surface plot?

Dear Sirs,
i have a code and i want to have the same welfare graphic in the paper but i can’t!!! please help
TZ_OPTIMAL_GRIDS_NEW.mod (11.6 KB)
TZ_OPTIMAL_PARAM_NEW.mod (11.3 KB)
TZ_STEADYSTATES_2014_NEW.m (3.3 KB)

What is the problem you are facing? You again did not provide all files to run the code

dear sir
when i run the file optimal Grid and Param i have such a result a matrix Welfare i when i want to plot it such the paper i don t have the same graph.
here all fils of the paper
Tayler and Zilberman_CODE_(2016).zip (22.6 KB)

But where does X come from? And why don’t you ask the providers of the code about any differences that occur?