The following is a part of a macro I use

a = 2
Range("ec" & a).Select
While Not IsEmpty(Range("ec" & a).Offset(0, -132).Value) '< ""
Range("ec" & a).Value = "=vlookup(v" & a & " ,markets!
R3c1:r66c3,3,false)"
Range("ed" & a).Value = "=+Assumptions!R1C4"
Range("ee" & a).Value = "=vlookup(s" & a & " ,factory!
R2c2:r5000c26,24,false)"
Range("ef" & a).Value = "=if(bg" & a & "+bi" & a & "+z" & a &
"+ab" & a & "+du" & a & "+dw" & a & "=0,0,1)"
Range("DU" & a).Value = "=CN" & a & "-DY" & a
Range("DV" & a).Value = "=CO" & a & "-DZ" & a
Range("DW" & a).Value = "=CP" & a & "-EA" & a
a = a + 1

Wend

If the macro is finished with its work the Vlookup in excel cannot be
calculated because the lookup shows the following.
=VLOOKUP('v2';Markets!$A$3:$C$66;3;FALSE). In other words the macro
adds ' between my search value v2 ??? how to solve the problem??