diff --git a/advotracker/src/bin/csv-test/main.rs b/advotracker/src/bin/csv-test/main.rs
index fba979b..bdc651f 100644
--- a/advotracker/src/bin/csv-test/main.rs
+++ b/advotracker/src/bin/csv-test/main.rs
@@ -360,6 +360,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         //let policy_number : usize = 1999999999;
         //match is_valid(&policy_number, &policy_data, &mut policy_numbers, &lang) {
         //    Ok(true) => {
+        // use Hashmap method 'get' to check if we have the given key
         match policy_numbers.get(&test_policy_number) {
             Some(&policy_code) => {
                 let res = t!("policy.validation.success", lang);