# The values are _copied_ here 
$csr->bind_param("serial_number", $Sno); 
$csr->bind_param("app_name", $appname); 
$csr->bind_param("max_time", $max); 
$csr->bind_param("max_size", $maxs); 
$csr->bind_param_inout("warranty_tbl", \$warra, -10); 
$csr->bind_param_inout("return_status", \$return, 100);