TM1 Element Security

[darners]

I am having some issues with Element Security

I have a cube that has 4 Dimensions

Row:

Title    &    Input Type

Column:

Months

Context:

Revision Number

I have set dimension Security to be WRITE for all Dimensions

I have set Element Security for the Months Dimension to be READ or WRITE depending on the current Month
I have set Element Security on the Input Type Dimension to be WRITE (Next Forecast) and READ for all others

My problem is that the element security for Input Type is working fine but not for the Months Dimension as per attached Screenshot

any help Gratefully received


edit: It would only let me post one screenshot, but for reference MAR OR and APR OR are set to READ and all others are WRITE