focal statistics within raster calculator within model builder....

Hi All,

The title tells you what I am doing. I cannot get the focal statistics to work within raster calculator which is within model builder. I have dumbed it down to just focal statistics inside of the raster calculator just to work through it and I am stumped. I have tried:

FocalStatistics( "%TPI%", NbrRectangle(5,5, "CELL"), "MEAN", "")
FocalStatistics( "TPI", NbrRectangle(5,5, "CELL"), "MEAN" ) - this works in raster calculator outside of modelbuilder
FocalStatistics( "%TPI%", NbrRectangle(5,5, "CELL"), "MEAN" )
FocalStatistics( "%TPI%", NbrRectangle( 5, 5, "CELL"), "MEAN", "")

What is modelbuilder looking for from me here?????

erg