Model builder - area to define stream does not translate into cells to define stream

Discussion created by Stefanie.Steinbach on Mar 24, 2014
Latest reply on Apr 2, 2014 by malnunn
Dear all,
At the moment I am building a model containing a sequence to derive a stream network from a DEM.
I created the variable 'Area sqkm to define stream', but somehow the area doesn't translate into the number of cells to define stream automatically; not even when I insert the area directly into the tool window. Thus, the model doesn't work and since I have to run it several times with different values, I don't want to calculate the number of cells every time I change the area.
Has anyone encountered and solved this problem before?