Why is the lamp not changing color?

In the app.2 that the boreholestability app is usig, I have coded a criterion for the lamp to change the color from green to red but it is not changing the color . I am wondering why it is not changing the color..

[Cameron]

You need to be a little more specific. You haven't told us what your expected inputs are to either of your .mlapp files. We cannot help you if you don't give us 1) your inputs, 2) your results, and 3) your expected results.

[Muazma Ali]

@Cameron ( the boreholestability app is just the front page that is not doing any operations), 1) inputs to the app2 , the number of zones: an integer value, number of salts available is also an input value and if it is less than 2 or more than 3 , the color of the lamp should change to red else it has to be green but mine is not changing color and that is the problem

[Muazma Ali]

@Cameron

I am now attaching a shorter code within the app2 file so it is easier for people to see what I have done. Right now I am just bothered about the lamp problem so therefore, I shortened the code..

[Image Analyst]

You can't do this:

app.NumberofsaltsEditField.Value=[]

you must set it to a number, not null or a string.