Macro does not function properly when I run through all work sheets

I'm running a basic code that will detect when certain columns stop having any data in their cells. I'm looking at the cells inside the area between K2 and W31.
It seems to work when I focus in on one worksheet, but when I run the entire code, it returns a value of 5 for x ( which is not correct).
I am wondering if someone might have an idea of what I was doing wrong, or what I should check.

Thank you

Code below:

Sub Macro()
Dim x, y, z, count As Integer
count = 2

x = 0
y = 2
z = 11

Dim sheet As Worksheet


For Each sheet In ThisWorkbook.Worksheets


If sheet.Name <> "Main Analysis" Then
count = count + 1


For z = 11 To 23

For y = 2 To 31

If Cells(y, z) = "" Then x = x + 1 Else x = 0

Next y

Worksheets("Main Analysis").Cells(count, z) = x
x = 0
y = 2

Next z
z = 11

MsgBox sheet.Name
MsgBox count

End If


Next sheet


End Sub

Thank you very much romperstomper. That was the error.
Yes, but I would like to reset the count whenever there is a non-blank cell.

Again, thank you for your help