App Designer help with code

I am attempting to make a march madness calculator using Matlab app designer as my final project in school and I am not succeeding in this task. I have multiple criteria for each team like defense, offense, coaching, etc..

each criteria is broken into 4 sections, for example offense, if a team scores 50-60 points per game on average they will be given a value of 1 for offense, if 61-70 a value of two and so on through 90.

then each criteria will be added for both teams and whichever team has the higher "score" wins

global x
if app.Seed1.Value==1-4
    x=4;
elseif app.Seed1.Value==5-8
    x=3;
elseif app.Seed1.Value==9-12
    x=2;
elseif app.Seed1.Value==13-16
    x=1;
end

I need this value of x to be able to be included in the final team's score calculation as well as the other criteria end values.

[Geoff Hayes]

Michael - what is the intent of the line (and similar)

if app.Seed1.Value==1-4

Are you trying to say instead

if app.Seed1.Value >= 1 && app.Seed1.Value <= 4
    x = 4;
end

where [1,4] is an interval. Also, it isn't clear to me where the above code resides but I suspect that you can avoid using a global variable to store the x value.