Digitech RP155

I bought a Digitech RP155 multi effect pedal, however i just learned it needs an extra plug in to use the Whammy and Wahwah effects. But idk what this "control pedal" is or where to get it.

The two things i wanted it most for. :( :(

I thinks some like this would work

Moog Expression Pedal

If you have a local music store they would have something like that you can use to test it out

I know your pain though buying a new "toy" that you have to hunt around for the accessores. I just bought a Randall amp off a guy and I've got a come up with a foot switch.

Pretty much any pedal thats not a stompbox (an actual pedal that moves) should work. i tried my stompbox, which pops it from low to high.
Now, how do i use the whammy effect? Ive figured out the wah and volume, but i saw whammy pedal mentioned.
Btw, i bought it used and the online manual wont show. so im forced to ask.