Just an update,
I did manage to solve this during the time it took to post. I used a series if/else statements instead:
if(thisComp.layer(“[+] moveAmt”).effect(“moveAmtN”)(“Slider”) ==1) transform.yPosition.key(1)
else if(thisComp.layer(“[+] moveAmt”).effect(“moveAmtN”)(“Slider”) ==2) transform.yPosition.key(2)
else if(thisComp.layer(“[+] moveAmt”).effect(“moveAmtN”)(“Slider”) ==3) transform.yPosition.key(3)
else if(thisComp.layer(“[+] moveAmt”).effect(“moveAmtN”)(“Slider”) ==4) transform.yPosition.key(4)
else if(thisComp.layer(“[+] moveAmt”).effect(“moveAmtN”)(“Slider”) ==5) transform.yPosition.key(5)
else transform.yPosition.key(1);
however, curious if anyone does figure out how to do this in an array!