"assignment missing left-hand" - Codebox won't compile!

hello lovely patchers! i've been putting together some control utilities for an additive synth using mc~ and i've run into the above error while working. does anyone know why this error is being thrown up? i'm not trying to make an assignment on the relevant line, it's just a condition check for the if statement.

i'm new to gen so i've looked around but couldn't find anything on this particular issue! thanks in advance.

center = in1;
amount = in2;
if (amount >= 0){
    if (mc_channel < center){
        val = 1 - amount;
        gain = scale(mc_channel, 0, center, val, 1, 1);
        out = clip(gain, 0, 1);
        }
    else{
        out = 1;
        }
    }
else if (amount < 0){ //issue happens here
    if mc_channel > center{
        val = amount + 1
        gain = scale(mc_channel, center, mc_channelcount, 1, val, 1)
        out = clip(gain, 0, 1);
        }
    else{
        out = 1    
        }
else if (amount == 0){
    out1 = 1
    }