Something is nuts. Why would a working script stopped working???

I've been running a script several dozen times. The last time it started complaining about an assignment operator

PathFile=[Path FileToGet]

↑

Error: Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality,

use '=='.

I don't see anything incorrect and it was working an hour or so ago. Any ideas

Path=uigetdir;
Path=[Path '\']
String='*csv';
Files=dir([Path String]);
NumberOfFiles=numel(Files);
for JJJ=1:NumberOfFiles
FileToGet=Files(JJJ).name
FileToSave=[FileToGet(1:end-4) ['.jpg']
PathFile=[Path FileToGet]
T=readmatrix(FilePath);
SizeT=size(T);
LastRowT= SizeT(1);
LastColT= SizeT(2);
T1=T(5:LastRowT,2:LastColT);
SizeT1=size(T1);
LastRow=SizeT1(1);
LastCol=SizeT1(2);
DataArray=T1-T1(1,1:LastCol);
DataArray=DataArray*-1;
figure('Name',FileToGet)
ribbon(DataArray);
ylim([1 LastRow])
Min=-50
Max=500
xlim([1 40])
zlim([Min Max]);
end

Answer 1

[per isakson]

The line before is in error (the brackets aren't balanced)

FileToSave=[FileToGet(1:end-4) ['.jpg']

The Code Analyzer box points at the error

Make the Code Analyzer box green!

[James Andrada]

Thanks much

ow do I run the code checker in the Edit Window when it's undocked from the main Matlab windo?

[per isakson]

I never use the editor undocked. However, the box is active in this undocked editor window.

It's possible to generate a report of Code Analyzer messages. See checkcode, Check MATLAB code files for possible problems

[James Andrada]

Thanks much. I found it!