diff --git a/back/backend/models.py b/back/backend/models.py
index 7859a08..69db8ee 100644
--- a/back/backend/models.py
+++ b/back/backend/models.py
@@ -79,6 +79,7 @@ class Field(models.Model):
             return "{}".format(self.data_string)
         elif self.field_type == "integer":
             return "{}".format(self.data_integer)
+        return "Invalid type"
 
     def get_datatype(self):
         """
diff --git a/back/backend/policy.py b/back/backend/policy.py
index 2674cc7..df95286 100644
--- a/back/backend/policy.py
+++ b/back/backend/policy.py
@@ -70,13 +70,13 @@ general_section = Section(
     title="General Info",
     html_description="<p>Each section of this report is designed to guide you through the reimbursement process. Please read through each and answer as many questions as you can that apply to you.</p><p>Be sure to click 'Save' after completing each section. Your entered data will be saved as you progress. You may also receive feedback from sections regarding policy restrictions and special requirements.</p>",
     fields={
-        "before_trip": {"number": 0, "label": "Have you taken this trip already?", "field_type": "boolean"},
+        "after_trip": {"number": 0, "label": "Have you taken this trip already?", "field_type": "boolean"},
     }
 )
 
 general_section.add_rule(
     title="Pre-trip / post-trip check",
-    rule=lambda report, fields: None if fields['before_trip'] else "If you have already take the trip your request will require special approval by the administrator. You may skip the following 'Pre-trip Planning' section."
+    rule=lambda report, fields: "If you have already take the trip your request will require special approval by the administrator. You may skip the following 'Pre-trip Planning' section." if fields['after_trip'] else None
 )
 
 pol.add_section(general_section)
@@ -193,7 +193,7 @@ lodging_section = Section(
         "cost": {"number": 1, "label": "Total cost for lodging", "field_type": "decimal"},
         "check_in_date": {"number": 2, "label": "Check-in date", "field_type": "date"},
         "check_out_date": {"number": 3, "label": "Check-out date", "field_type": "date"},
-        "invoice_screenshot": {"number": 4, "label": "Screenshot of invoice", "field_type": "screenshot"},
+        "invoice_screenshot": {"number": 4, "label": "Screenshot of invoice", "field_type": "file"},
     }
 )
 
diff --git a/back/backend/views.py b/back/backend/views.py
index 1216bee..bd4a9ec 100644
--- a/back/backend/views.py
+++ b/back/backend/views.py
@@ -53,10 +53,11 @@ def get_sections(r_id):
             for rule in rules:
                 try:
                     named_fields = generate_named_fields_for_section(data['fields'])
-                    if not rule['rule'](data, named_fields):
+                    result = rule['rule'](data, named_fields)
+                    if not result is None:
                         info = {
                             "label": rule['title'],
-                            "rule_break_text": rule['rule_break_text'],
+                            "rule_break_text": result,
                         }
                         data['rule_violations'].append(info)
                 except Exception as e:
@@ -342,10 +343,11 @@ def section(request, report_pk, section_pk):
         for rule in rules:
             try:
                 named_fields = generate_named_fields_for_section(data['fields'])
-                if not rule['rule'](data, named_fields):
+                result = rule['rule'](data, named_fields)
+                if not result is None:
                     info = {
                         "label": rule['title'],
-                        "rule_break_text": rule['rule_break_text'],
+                        "rule_break_text": result,
                     }
                     data['rule_violations'].append(info)
             except Exception as e:
diff --git a/back/db.sqlite3 b/back/db.sqlite3
index d3fa227..b0936b9 100644
Binary files a/back/db.sqlite3 and b/back/db.sqlite3 differ