$1 = "Cell ID for First Cell: MCC: 310  MNC: 64  LAC: x'44D  CI: x'MAD023"; #This is what I want to print.

%Firstcell = (
"Cell ID for First Cell: MCC: 310  MNC: 64  LAC: x'44D  CI: x'4F07", "Cell ID for First Cell: MCC: 310  MNC: 64  LAC: x'44D  CI: x'MAD023",
Cell ID for First Cell: MCC: 310  MNC: 64  LAC: x'44D  CI: x'270B", "Cell ID for First Cell: MCC: 310  MNC: 64  LAC: x'44D  CI: x'APPL2B");

##</code><code>##

if ($lastheading = "MSTerminating") {
if (grep "$1", @lines) {
print "$_";
}
}