suppress null columns

I've referenced the following threads before posting:

http://forums.pentaho.com/showthread...+empty+columns
http://forums.pentaho.com/showthread...ly-in-a-report
http://forums.pentaho.com/showthread...have-null-data

My situation requires that the details band maintain the canvas layout to control formatting. I have created a sub-band with the 'block' layout to format certain fields. I am successful in suppressing null values, however I'm printing blank rows. For example:

field1
(blank row)
field3

where I desire

field1
field3 without any blank rows above field3. How do I accomplish this?

I have invisible-cosumes-space set for each element within the the sub-band. I am using the following visible formula for each element: =IF(ISNA([field]);"False";"True")