TDirectory mkdir, inside a loop

ROOT
1

Hi, I would like to ask about the function mkdir, I would like to use it inside a loop, is there a way to use as an argument a string, and not the name of the folder?
TDirectory *ZZ = cr1->mkdir(“ZZ”);
I 've tried using
TString name =“ZZ”;
TDirectory *ZZ = cr1->mkdir(name.c_str()); but does not work

Thanks a lot!

2 
TString name =“ZZ”;
TDirectory *ZZ = cr1->mkdir(name.Data());
3

Thanks couet, that solved my issue!