created an attachment (id=166899)
screenshot

description:
tooltip does not work correctly when using cube binding as expression.

build number:
2.6.0.v20100504-0630

steps to reproduce:
1. preview the attached report design in web viewer.
2. mouse over value series and check the tooltip.

expected result:
tooltip shows "city".

actual result:
tooltip show value of value series (see the screenshot.) 

error log:
n/a
created an attachment (id=166900)
report design
it's not allowed to input cube expression in tooltips for data cube.
please enhance the ui.
fixed by using chart variables in tooltip scripts instead of chart expressions in consuming cube case.
verified in build (2.6.0.v20100520-0630), closed.