illeGal cell id
 

hi,
I am working with polyTopoChange class and polyRemoveCell class
I passed cell Ids of cells I want to remove , my code compiled succesfully but while running the case , it initially ran well but as it reached the first cell to remove it crashed displaying error-
--> FOAM FATAL ERROR:
illegal cell label -1
Valid cell labels are 0 .. 6299

From function void Foam: polyTopoChange::removeCell(Foam::label, Foam::label)


Can anyone help me deal with this