VLOOKUP with macro

Hello everybody.
In the attached workbook there is a formula cerca.vert

=SE(L8="";"";SE(VAL.NON.DISP(CERCA.VERT(L8;data_base!$A$2:$B$1500;2;0));"v.n.d.";CERCA.VERT(L8;data_base!$A$2:$B$1500;2;0)))
=IF(L8="","",IF(ISNA(VLOOKUP(L8,data_base!$A$2:$B$1500,2,0)),"v.n.d.",VLOOKUP(L8,data_base!$A$2:$B$1500,2,0)))

is it possible to turn it into a macro at each new insertion in the range L7:L31 ?
Thank you.
xam