generate invpice number in server

app/Http/Controllers/DS/DealerClaimController.php

@@ -287,7 +287,7 @@ class DealerClaimController extends Controller
 		$claim = DealerClaim::where('formT',$formT)->where('dealer',$dealer)->where('activated_my',$month.'/'.$year)->get();
 
 		foreach ($claim as $key => $c){
-			$c->invoice_no = 'B000000004';
+			$c->invoice_no = 'B000000018';
 			$c->save();
 		}
 	}