Problem with echo in teststand

Question

Hi,
I have a function writen in C (Labwindows CVI). In this function  i try to send an echo to  another Programm. When i run the function in CVI , it walks without any Problem. But when i try to call the function from Teststand 3.5 , it doesn't walk properly. Teststand marks the step as Passed although  the command were not executed. I don't understand what is wrong. Is it possible that Teststand doesn't allowed the use of "echo" ?? if not, how can i solve the problem ??
here is my code:
sprintf(cmd,"command.com /C echo %s| prog --command1 \"%s\"", ECHOTEXT, SAVE);
LaunchExecutableEx(cmd,LE_SHOWNORMAL, &hdl);
prog is the name of the programm i am sending the echo to.
I hope somebody can have an answer.
Regards,
Noubissi
Teststand 3.5
Visual Studio 2005

Answer 1

Hello Robert,
Thanks for your answer, but the solution you proposed don't solve my problem, since i am not calling the programm from Teststand directly  like you did.
 I am using Teststand to call a function written in CVI, and the job of that function is  to call a programm and pass arguments using echo.
This is the function i am  calling from TestStand: 
int TestFunction()
char cmd[300]={0};
int hdl;
char * ECHOTEXT= "echotext";
char *SAVE ="C:\\Develop";
sprintf(cmd,"command.com /C echo %s| prog --command1 \"%s\"", ECHOTEXT, SAVE);
LaunchExecutableEx(cmd,LE_SHOWNORMAL, &hdl); 
return(0);
Regards,
Noubissi
Teststand 3.5
Visual Studio 2005