string G=project.Variables["G"].Value;
string re_С=@"(?<=\ id=""next_С""\ value="").*?(?="">)";
string С = Regex.Match(G, re_G).Value;
project.Variables["С"].Value=С;
string re_T=@"(?<=T=).*?(?=;\ path=/)";
string T = Regex.Match(G, re_G).Value;
project.Variables["T"].Value=T;
вот код где G...