excel - VBA Application-defined or object-defined error -

i working vba excel. "application defined or object defined" error each time run code. here is:

sub test() dim integer, j integer, k integer, l integer, t integer dim row integer dim maturite integer dim tsup double, tinf double dim datetaux date, datejouissance date dim taux double  = 2 770 maturite = sheets("em").cells(i, 19) datejouissance = sheets("em").cells(i, 14)  l = 2 255     k = 0 10     t = 1 10         row = 13 * k + 2         datetaux = sheets("tsr").cells(row, l)     taux = sheets("tsr").cells(13 * k + 3, l)     if taux <> 0      if datejouissance = datetaux          if 91 <= maturite , maturite <= 182          tsup = sheets("tsr").cells(row + 2, j)          tinf = sheets("tsr").cells(row + 1, j)          sheets("em").cells(i, 21).value = ((tsup - tinf) * (maturite - 91) / (182 - 91)) + tinf          end if end if end if next next next next end sub 

i error @ :

     tsup = sheets("tsr").cells(row + 2, j) 

i tried using :

     tsup = sheets("tsr").cells(row + 2, j).value 

the type of sheets("tsr").cells(row + 2, j).value double. it's not working. can't seem understand problem is.

thanks in advance

i think may need check value of j. far can see code value remains 0. column 0 not exist , lead given error.