[Miguel De mendoza]

Maybe do you need to use a “cycle” loop:

loopOut("cycle",0)

[Miguel De mendoza]

You cant`t change a layer outpoint via expressions, you must do it by script. But if you only have to do it once per day, the best way is mouse+shift.

[Miguel De mendoza]

You can change the random() min parameter to 2 like this:
Math.floor(random(2,index));

Or you can check the value with an if statement:
duration = .125; //length of each cut (seconds)

seed = Math.floor(time/duration) + 1;
seedRandom(seed,true);
randomValue = Math.floor(random(1,index));

val = (randomValue < 2) 2: randomValue;

[Miguel De mendoza]

Write this on the number scale then:

arrowPos = thisComp.layer("arrow").transform.position[1];
if (arrowPos > 500) {
[100, 100];
} else {
[50, 50];
}

[Miguel De mendoza]

Try this:

max = thisComp.height;
magnitude = 0.1;
masterPos = transform.position[1]; //Or the position you want to follow
posY = (masterPos - max)* magnitude ;

[posY, posY]


[Miguel De mendoza]

You can use a name sufix. For example, do you want to instantiate 100 odometer comps, you can create one odometer comp “Odometer_1”. Now you can write something like this:

try {
nameSplit = name.split("_");
ind = nameSplit[nameSplit.length - 1];
pippo = comp("lots_of_counters").layer("counter_" + ind).effect("Slider Control")("Slider");
} catch (err) {
}

At this point you can duplicate the comp and do the same for the layers do you want to reference: “counter_1”, “counter_2″….

[Miguel De mendoza]

There are some erros on your code.
First of all,using a try/catch statement to check if a layer have a property is not the best way:
// If the layer has the property, invoke the function with the property as input
try{//wrong
myProperty = myLayer.property("sourceText");
convertToKeyframes(myProperty);
}catch(err){
}

You must do it by a if/else statement, and in your case, what you need to check is if the current layer is a TextLayer object, because all text layers must have a sourceText property.

Second you are trying to access sourceText property on a wrong way. You must access it using full property spec, and it’s better to use the matchName instead of the name:

if(myLayer instanceof TextLayer){
myProperty = myLayer.property(" ADBE Text Properties").property("ADBE Text Document");
//Do stuff
}

Other thing I can see is if you want to do this for multiple comps you must encapsulate your code on a function with the current comp as parameter, and then iterate throug the comps:

function bakeExpressions(curComp){
// Check if something is selected and if selection it is a Composition...
//...
}
selection = app.project.selection;

for(var curComp in selection){
bakeExpressions(curComp);
}

[Miguel De mendoza]

Maybe this aproach is what do you need:
https://motionscript.com/design-guide/marker-sync.html

[Miguel De mendoza]

Look at this post: https://forums.creativecow.net/thread/227/30494

You can tweek it to change any property of any layer. Here is an example on how I use this tecchnique:

As you can see on top, there are various ‘master’ comps named “triangles_n”. You only need to set the triangles(or any layer) position where do you want on each ‘master’ comp and then control the animations by the marker comment.

[Miguel De mendoza]

Can you copy here the full error code?