diff --git a/geolocation/doc_events/employee_checkin.py b/geolocation/doc_events/employee_checkin.py
new file mode 100644
index 0000000..eccbff0
--- /dev/null
+++ b/geolocation/doc_events/employee_checkin.py
@@ -0,0 +1,19 @@
+import frappe
+import json
+import requests
+
+def validate(doc, methods=None):
+    doc.latitude = 9.968577
+    doc.longitude = 76.303978
+    if doc.latitude and doc.longitude and not doc.custom_location:
+        url = "https://nominatim.openstreetmap.org/reverse?lat={lat}&lon={lon}&format=json".format(
+            lat = doc.latitude,
+            lon = doc.longitude
+        )
+        response = requests.get(url)
+        if response.status_code == 200:
+            response = response.json()
+            doc.custom_location = str(response.get("display_name"))
+        else:
+            doc.custom_location = ""
+        
\ No newline at end of file
diff --git a/geolocation/fixtures/custom_field.json b/geolocation/fixtures/custom_field.json
new file mode 100644
index 0000000..e3652d1
--- /dev/null
+++ b/geolocation/fixtures/custom_field.json
@@ -0,0 +1,58 @@
+[
+ {
+  "allow_in_quick_entry": 0,
+  "allow_on_submit": 0,
+  "bold": 0,
+  "collapsible": 0,
+  "collapsible_depends_on": null,
+  "columns": 0,
+  "default": null,
+  "depends_on": null,
+  "description": null,
+  "docstatus": 0,
+  "doctype": "Custom Field",
+  "dt": "Employee Checkin",
+  "fetch_from": null,
+  "fetch_if_empty": 0,
+  "fieldname": "custom_location",
+  "fieldtype": "Small Text",
+  "hidden": 0,
+  "hide_border": 0,
+  "hide_days": 0,
+  "hide_seconds": 0,
+  "ignore_user_permissions": 0,
+  "ignore_xss_filter": 0,
+  "in_global_search": 0,
+  "in_list_view": 0,
+  "in_preview": 0,
+  "in_standard_filter": 0,
+  "insert_after": "attendance",
+  "is_system_generated": 0,
+  "is_virtual": 0,
+  "label": "Location",
+  "length": 0,
+  "link_filters": null,
+  "mandatory_depends_on": null,
+  "modified": "2024-06-12 11:03:55.148981",
+  "module": null,
+  "name": "Employee Checkin-custom_location",
+  "no_copy": 0,
+  "non_negative": 0,
+  "options": null,
+  "permlevel": 0,
+  "precision": "",
+  "print_hide": 0,
+  "print_hide_if_no_value": 0,
+  "print_width": null,
+  "read_only": 1,
+  "read_only_depends_on": null,
+  "report_hide": 0,
+  "reqd": 0,
+  "search_index": 0,
+  "show_dashboard": 0,
+  "sort_options": 0,
+  "translatable": 0,
+  "unique": 0,
+  "width": null
+ }
+]
\ No newline at end of file
diff --git a/geolocation/hooks.py b/geolocation/hooks.py
index ccbdfa1..0c3c1d9 100644
--- a/geolocation/hooks.py
+++ b/geolocation/hooks.py
@@ -122,13 +122,11 @@
 # ---------------
 # Hook on document methods and events
 
-# doc_events = {
-# 	"*": {
-# 		"on_update": "method",
-# 		"on_cancel": "method",
-# 		"on_trash": "method"
-# 	}
-# }
+doc_events = {
+	"Employee Checkin": {
+		"validate": "geolocation.doc_events.employee_checkin.validate"
+	}
+}
 
 # Scheduled Tasks
 # ---------------
@@ -227,3 +225,17 @@
 # 	"Logging DocType Name": 30  # days to retain logs
 # }
 
+fixtures = [
+    {
+        "doctype": "Custom Field",
+        "filters": [
+            [
+                "name",
+                "in",
+                [
+                    "Employee Checkin-custom_location"
+                ]
+            ]
+        ]
+    }
+]
\ No newline at end of file