diff --git a/LoadCSVData.pl b/LoadCSVData.pl
index b307c5e..c8e6000 100644
--- a/LoadCSVData.pl
+++ b/LoadCSVData.pl
@@ -140,7 +140,7 @@ sub trxelab {
 	) or die getTimeStamp("log") . " - pid $$ >> $DBI::errstr";
 
 	$sth->execute();
-	if ( $sth->rows < 0 ) {
+	if ( $sth->rows eq 0 ) {
 		die getTimeStamp("log") . " - pid $$ >> No unit ftp params selected.\n";
 	}else {
 		while ( my $results = $sth->fetchrow_hashref ) {
@@ -245,7 +245,7 @@ sub getNodesType {
 
 	$sth->execute();
 	print getTimeStamp("log"). " - pid $$ >> $unit - $tool: " . $sth->rows . " rows selected to get node type/Ain/Din/channels.\n";
-	if ( $sth->rows < 0 ) {
+	if ( $sth->rows eq 0 ) {
 		die getTimeStamp("log") . " - pid $$ >> No node channels selected.\n";
 	}else {
 		my $row = 0;
@@ -272,7 +272,7 @@ sub getUdbPwd {
 	  or die getTimeStamp("log") . " - pid $$ >> $DBI::errstr";
 
 	$sth->execute();
-	if ( $sth->rows < 0 ) {
+	if ( $sth->rows eq 0 ) {
 		die getTimeStamp("log") . " - pid $$ >> No password selected.\n";
 	}else {
 		my $results = $sth->fetchrow_hashref;
@@ -301,7 +301,7 @@ sub getMatlabCmd {
 	) or die getTimeStamp("log") . " - pid $$ >> $DBI::errstr";
 
 	$sth->execute();
-	if ( $sth->rows < 0 ) {
+	if ( $sth->rows eq 0 ) {
 		die getTimeStamp("log"). " - pid $$ >> No tool's matlab function selected.\n";
 	}else {
 		while ( my $results = $sth->fetchrow_hashref ) {