After effects Dropdown and slider expression to change position of a layer

[AfterReflects]

I am creating a setup in after effects where I want to change a position according to a slider and dropdown values. Using below expression for the same 

mDrop = comp("Character Builder").layer("Body Type").effect("Body Type")("Menu");
s = thisComp.layer("Turn Body & Head").effect("Turn Body")("Slider");
x = transform.position[0];
y = transform.position[1];
[x,y];
if (s == 0 && mDrop == 1) {[x,y]}
else if (s == 1 && mDrop == 1) {[x-110,y-11]}
else if (s == 2 && mDrop == 1) {[x-325,y]}
else if (s == 3 && mDrop == 1) {[x-526,y-94.5]}
else if (s == 4 && mDrop == 1) {[x-598.,y-106.1]}
else if (s == -4 && mDrop == 1) {[x-598.,y-106.1]}
else if (s == -3 && mDrop == 1) {[x-495,y-79]}
else if (s == -2 && mDrop == 1) {[x-299,y]}
else if (s == -1 && mDrop == 1) {[x-71,y-14]}
else if (s == 1 && mDrop == 2) {[x-41.5,y+62.5]}



There will be more dropdown values till 5 and I want to change the postion if mentioned slider and dropdown values matches

[Dan Ebberts]

I'm guessing you have a question, correct? From your screen cap, it looks like your expression generates an error. What's the error message?

[AfterReflects]

Yes sorry it was a question. Error says "Undefined value used in expression"

I am not good with expressions. Any help will be a life saver.

[AfterReflects]

I have added a slider and dropdown controller to control position of a layer, 
So if slider and dropdown condition matches, the position will be set to the mentioned x,y values.

But i am not able to make it work.

[Dan Ebberts]

If you click into the expression, it should highlight a particular line where the error is. Can you post an image of that?

[AfterReflects]

[Dan Ebberts]

What are the current values of the menu and the slider?

[Dan Ebberts · Accepted solution]

Try adding this as the last line and see if it gets rid of the error:

else value

[AfterReflects]

When Dropdown value is 1 it works fine but when when i select any other dropdown options apart from 1, it shows the error.

[Dan Ebberts]

I get that error if the menu is set to the 2nd item and the slider is set to anything other than 1, because there is no code to handle that situation. The ending line I suggested should keep it from erroring out.

[AfterReflects]

Yessss, it worked, I guess I can add more condition to it now. THank you so much. I will try and reply if anything comes up.