Combining PSA Attack with another in AttackS4S

[Cplosion]

Soo for Falcos AttackS4S I want him to do Captain Falcons Attack 100 then for a finish his SpecialS. Can that be done? I notice some PSA's have too Attacks combined into one. Can someone help me?

[SouthCraft]

As i understanded it right use this code on the attack 100 subaction
If Button realese 0
Change subaction: CF side b Subaction
Synchronous frames: 12
Allow Interupt
End if

[Cplosion]

I don't know how to add it correctly I want to add 2 attacks and make it one.