[Scripting Question] Ability procs twice?

[Marin]

I was working on some Gen VII abilities, Shields Down in specific. I'm building it from scratch, here is it so far (because of this error I don't have much):
(Under Darmanitan's Zen Mode)

    # Minior
    if self.hasWorkingAbility(:SHIELDSDOWN) && @hp<=((@totalhp/2).floor)
      if self.form=0
        self.form=1; transformed=true
      end
    end

Once its HP is lower than half of its max HP, it transforms immediately after the move that caused it to get lower than half. At the end of the turn, it transforms twice. I only want it to transform after it's been hit, not at the end of the turn. Could someone explain what to do or edit this code to work as I described? I'll figure the rest of Shields Down out myself.

 

[Telemetius]

try adding = to "if self.form==0"

 

[Marin]

try adding = to "if self.form==0"

.....
And I thought I knew my Ruby well... It's fixed, thanks a bunch! While we're at it, can you clarify this real quickly for me? >=, for example, means "Greater than or equal to" (X or higher) and == means "equal to exactly", but what does = alone mean, when checking for a number, in an if-sentence?

 

[Telemetius]

Well ""=="" checks if the values are equal while ""="" replaces the left value with the right one.

 

[Marin]

Well ""=="" checks if the values are equal while ""="" replaces the left value with the right one.

Alright. I honestly thought you could check a value with "=". Thanks for the help!