change the background color in table in report

I have a table that i need to display data
for each row I want the background color to be diff
anybody knowhow to do it ?

color
blank
color
blank

i am not at work right now but if iam not mistaken the syntax is:

iif(rowcount(nothing)=2, " GRAY " , nothing)

|||thank you|||

I tried using this property but it gives me error RowCount not declared

where should I write this event ?

|||

Try using RowNumber instead of RowCount.

The code is placed in the background color property. Choose the color dropdown and look for the <Expression> option. Select that, and add your code there.

|||

If I need to see one yes one no like

1111 [visible]

2222 [invisible]

3333 [visible]

4444 [invisible]

......

I change the property Visibility-Initial visibility = expression = IIF(parameter="SOMETHING", FALSE,TRUE) with this I can hide the DATA but I need to hide the Field too (with border and everything), in preview it looks very good but If I deploy the report change and show the field with borders.

MARCOS

|||

I do not see alternate rows gray .

In that expression what does "nothing" stand for .

I just copied that statement in my code

Do I need to replace it with some values