Et comme ça ça marche ?
Dim a As Integer, b%, c%, d%, e%, f%
For a = 1 To 50
Cells(a, 1).Value =
Next a
For b = 51 To 100
Cells(b, 1).Value =
Next b
For c = 101 To 150
Cells(c, 1).Value =
Next c
For d = 151 To 200
Cells(d, 1).Value =
Next d
For e = 201 To 250
Cells(e, 1).Value =
Next e
For f = 251 To 300
Cells(f, 1).value =
Next f
Le "%" dans la déclaration des variables signifie Integer