Font Style Error

[Spade Studio]

Hi again guys 🙂

I have been using one expression for a few months and worked fine, but I just tried it in another project and I am receiving an error which I don't understand.

I a trying to 'copy' the style of layer 'A' and be read by layer 'B'. However, a 'style error' is appearing and I don't know why, because is the sae expression I used in other projects...

 (I attached the screenshot in case this one has no quality)

Here is the code I used:

sl=effect("Slider Control")("Slider");
if(effect("Up/Down")("Checkbox")==1){
	Tt=sl-time+1;
}else{
	if(time<sl){Tt=time}else{Tt=sl}
}
sec=Math.floor(Tt%60);
min=Math.floor(Tt/60);

function Zero(n){
if(n<10) return ("0"+n) else return n;
}

if(Tt>0){
Zero(min)+":"+Zero(sec)}
else
{"00:00"};

txt = thisComp.layer("FONT").text.sourceText.style;
style.setFont(txt.font).setFontSize(txt.fontSize).setText(sl)

I hope you guys can help me, thank you!

[Mylenium]

check whether you have the modern JavaScript engine enabled in the Project settings. The legacy engine won't handle this stuff and in an older project it would be saved as the default.

Mylenium