Expression Error: If Else not working???

[#1]

V = effect("Slider Control")("Slider");

if (V > 0) X = 100 else X = 0;

[X,X]

This is just about as simple as it gets but I get this error:

Error: Syntax error: Unexpected token else (And this is about line 2 obviously)

What? I could swear this is similar to what I've done before. Help me out!

[#2]

V = effect("Slider Control")("Slider");

if (V > 0) X = 100 else X = 0;

[X,X]

This is just about as simple as it gets but I get this error:

Error: Syntax error: Unexpected token else (And this is about line 2 obviously)

What? I could swear this is similar to what I've done before. Help me out!

[#3]

Never mind, I got it. Curly brackets... {100} {0} or legacy ExtendScript in project settings.

[#4]

Or:  

X = (V > 0) ? 100 : 0;

Dan