Expression result must be of dimension 2 not 1

[Orchard0D44]

Hello, looking for help on the error found in the title. Following a guide which i've linked below, so not sure how to resolve. Other threads similar to this have had custom solutions. 

Tutorial: https://www.youtube.com/watch?v=qlKOWc81obU&ab_channel=aescripts%2Baeplugins 

Any help appriciated. 
Thank you

[Dan Ebberts]

It's hard to tell from your screen shot, but do you have the whole expression? The part that's visible ends with connecting the controller variable to the slider. If you end the expression there, you will indeed get that error message because controller is one-dimensional. If you add the rest of the expression (or even just the next line), you should end up with a 2-dimensional value and the error should disappear. Hope that helps.

[Orchard0D44]

Hello @Dan Ebberts thank you for replying. I stopped there because i thought the error wouldn't allow me to move on. But i'll complete today and see if it works. 

Thank you for you reply.

[Orchard0D44]

Hey @Dan Ebberts, just input the full expression and still getting some errors. Screen shot and expression code is below. Any help would be great thank you. 

Expression: 

rank = thisProperty.propertyGroup(2).propertyIndex;

numberObjects = thisProperty.propertyGroup(3).numProperties;

positionOnPath = rank/numberObjects;

Position1 = thisComp.layer("S Outlines").mask("S").maskPath.pointOnPath(percentage = positionOnPath, t = time) Position2 = thisComp.layer("H Outlines").mask("H").maskPath.pointOnPath(percentage = positionOnPath, t = time) Position3 = thisComp.layer("I Outlines").mask("I").maskPath.pointOnPath(percentage = positionOnPath, t = time) Position4 = thisComp.layer("F Outlines").mask("F").maskPath.pointOnPath(percentage = positionOnPath, t = time) Position5 = thisComp.layer("T Outlines").mask("T").maskPath.pointOnPath(percentage = positionOnPath, t = time)

controler = effect("Slider Control")("Slider").value;

linear(controler,0,100,Position1,Position2,Position3,Position4,Position5);

[Dan Ebberts]

You'd use linear() to interpolate between two positions. It's not going to work if you stick 5 positions in there.

[Dan Ebberts]

If you wanted to morph through 5 positions as the controler slider goes from 0 to 100, you could replace your last line with something like this:

if (controler < 25){
  linear(controler,0,25,Position1,Position2);
}else if (controler < 50){
  linear(controler,25,50,Position2,Position3);
}else if (controler < 75){
  linear(controler,50,75,Position3,Position4);
}else{
  linear(controler,75,100,Position4,Position5);
}

but you'd probably need to do somethg about the Wiggly Selector keyframes for it to make sense.