请问怎样在winexec('net use ...',sw_hide)里面设置变量啊？

winexec('net use \\127.0.0.1\c$ "password"/"administrator"',sw_hide);我要把ip地址和password都换成变量请问应该怎么写啊？我这样写也不行
A2:=trim(adoquery1.fieldbyname('IP').asstring);
A3:=trim(adoquery1.fieldbyname('PAS').asstring);
A1:=trim('net use'+'\\'+A2+'\'+'c'+'$'+'"'+A3+'"'+'/'+'user'+':'+'"'+'administrator'+'"');
winexec(pchar(A1),sw_hide);怎么回事啊？各位教教我来谢谢！