Hello Chin, what can I do, to resolve following problem: Background Information: package tcom 3.9 description of problem: I have to use “,” instead “.” For double values, when I calling a method of activex-programm with one oder more double arguments (dTimeOut) set dTimeOut 0,5 set vMethodRetValue [$vCDS(ref) CANReceive $lDeviceNr $dTimeOut plDLC plByte1 plByte2 plByte3 plByte4 plByte5 plByte6 plByte7 plByte8 plDllError] Is it normal or ? if i send 0.5 the activex server receives the value 5.00000 thanks very much for your Help "omar.medina@web.de"