Is the throttle valve inside the valve body?

Weird question I know, but is the throttle valve inside the valve body in the transmission? I have a 73 cougar with a fmx tranny. I am wondering if this “throttle valve” is apart of the valve body because I took apart the transmission to replace the linkage seals and now it’s shifting funny. I believe it’s because i put the vacuum modulator in wrong. I believe i needed to take out the vacuum mod then insert the valve body then reinstall it to have it seat inside the valve body. If im totally wrong let me know but thats what my head tells me.