Text scaling on each line (smart sizer)

Hi

I would like the text to be scaled up and the leading correct on each line. (see photos)
I am using a ukramedia script, but this only applies to a text box and not a text line.
I don't have much experience with after effects, which is why I also use this script in the first place.

I want to make this a template for premiere, so that it has to be dynamic.

This is the smart sizer script:

try {
sizeOptions = effect("Smart Sizer 1.0")("Size Options").value;
customTime = sourceTime(effect("Smart Sizer 1.0")("Custom Time").value);
layerSizeAt = effect("Smart Sizer 1.0")("Layer Size at").value;
customTimeSource = effect("Smart Sizer 1.0")("Custom Time Source").value;
switch(layerSizeAt) {
	case 1:
	finalSize = sourceTime(time);
	break;
	case 2:
	finalSize = inPoint;
	break;
	case 3:
	finalSize = inPoint + outPoint/2;
	break;
	case 4:
	finalSize = outPoint;
	break;
	case 5:
		if (customTimeSource == 1) {
			finalSize = sourceTime(customTime);
		} else {
			finalSize = customTime;
		}
	break;
	default:
	finalSize = sourceTime(time);
	break;
}
sizeAtTime = sourceRectAtTime(finalSize, true);
xMargin = effect("Smart Sizer 1.0")("X Margin (px)").value * 2;
yMargin = effect("Smart Sizer 1.0")("Y Margin (px)").value * 2;
xSize = effect("Smart Sizer 1.0")("Width (px)").value - xMargin;
ySize = effect("Smart Sizer 1.0")("Height (px)").value - yMargin;
x = xSize / sizeAtTime.width * 100;
y = ySize / sizeAtTime.height * 100;
fitToWidth = Math.min(x, y);
fitToHeight = Math.max(x, y);
switch(sizeOptions) {
	case 1:
	[x, x];
	break;
	case 2:
	[y, y];
	break;
	case 3:
	[fitToWidth, fitToWidth];
	break;
	case 4:
	[fitToHeight, fitToHeight];
	break;
	case 5:
	[x, y];
	break;
	default:
	[x, y];
	break;
}
}
catch (err) {
	value;
}

Thanks in advance!