SETP and 32-bit process

#1
Code:
TCC  22.00.24 x64   Windows 7 [Version 6.1.7601]
Testing out the SETP command, I have no problem creating, modifying, or displaying an environment variable in another 64-bit process.

However, I am unable to use SETP to create, modify, or display an environment variable in another 32-bit process.

Is this WAD?

Joe