diff --git a/apps/builder/src/features/blocks/logic/condition/components/ComparisonItem.tsx b/apps/builder/src/features/blocks/logic/condition/components/ComparisonItem.tsx
index a76d6360ac0..c13eb700279 100644
--- a/apps/builder/src/features/blocks/logic/condition/components/ComparisonItem.tsx
+++ b/apps/builder/src/features/blocks/logic/condition/components/ComparisonItem.tsx
@@ -38,13 +38,14 @@ export const ComparisonItem = ({
         items={Object.values(ComparisonOperators)}
         placeholder="Select an operator"
       />
-      {item.comparisonOperator !== ComparisonOperators.IS_SET && (
-        <TextInput
-          defaultValue={item.value ?? ''}
-          onChange={handleChangeValue}
-          placeholder="Type a value..."
-        />
-      )}
+      {item.comparisonOperator !== ComparisonOperators.IS_SET &&
+        item.comparisonOperator !== ComparisonOperators.IS_EMPTY && (
+          <TextInput
+            defaultValue={item.value ?? ''}
+            onChange={handleChangeValue}
+            placeholder="Type a value..."
+          />
+        )}
     </Stack>
   )
 }
diff --git a/apps/viewer/src/features/blocks/logic/condition/executeCondition.ts b/apps/viewer/src/features/blocks/logic/condition/executeCondition.ts
index 5ec6f999b82..214c543cb7e 100644
--- a/apps/viewer/src/features/blocks/logic/condition/executeCondition.ts
+++ b/apps/viewer/src/features/blocks/logic/condition/executeCondition.ts
@@ -31,7 +31,8 @@ export const executeCondition = (
 }
 
 const executeComparison =
-  (variables: Variable[]) => (comparison: Comparison) => {
+  (variables: Variable[]) =>
+  (comparison: Comparison): boolean => {
     if (!comparison?.variableId) return false
     const inputValue =
       variables.find((v) => v.id === comparison.variableId)?.value ?? ''
@@ -39,6 +40,7 @@ const executeComparison =
       findUniqueVariableValue(variables)(comparison.value) ??
       parseVariables(variables)(comparison.value)
     if (isNotDefined(value)) return false
+    if (isNotDefined(comparison.comparisonOperator)) return false
     switch (comparison.comparisonOperator) {
       case ComparisonOperators.CONTAINS: {
         const contains = (a: string | null, b: string | null) => {
@@ -47,6 +49,13 @@ const executeComparison =
         }
         return compare(contains, inputValue, value)
       }
+      case ComparisonOperators.NOT_CONTAINS: {
+        const notContains = (a: string | null, b: string | null) => {
+          if (b === '' || !b || !a) return false
+          return !a.toLowerCase().trim().includes(b.toLowerCase().trim())
+        }
+        return compare(notContains, inputValue, value)
+      }
       case ComparisonOperators.EQUAL: {
         return compare((a, b) => a === b, inputValue, value)
       }
@@ -76,6 +85,23 @@ const executeComparison =
       case ComparisonOperators.IS_SET: {
         return isDefined(inputValue) && inputValue.length > 0
       }
+      case ComparisonOperators.IS_EMPTY: {
+        return isNotDefined(inputValue) || inputValue.length === 0
+      }
+      case ComparisonOperators.STARTS_WITH: {
+        const startsWith = (a: string | null, b: string | null) => {
+          if (b === '' || !b || !a) return false
+          return a.toLowerCase().trim().startsWith(b.toLowerCase().trim())
+        }
+        return compare(startsWith, inputValue, value)
+      }
+      case ComparisonOperators.ENDS_WITH: {
+        const endsWith = (a: string | null, b: string | null) => {
+          if (b === '' || !b || !a) return false
+          return a.toLowerCase().trim().endsWith(b.toLowerCase().trim())
+        }
+        return compare(endsWith, inputValue, value)
+      }
     }
   }
 
diff --git a/packages/schemas/features/blocks/logic/condition.ts b/packages/schemas/features/blocks/logic/condition.ts
index 9346fbf7236..e1ee26cbc72 100644
--- a/packages/schemas/features/blocks/logic/condition.ts
+++ b/packages/schemas/features/blocks/logic/condition.ts
@@ -13,9 +13,13 @@ export enum ComparisonOperators {
   EQUAL = 'Equal to',
   NOT_EQUAL = 'Not equal',
   CONTAINS = 'Contains',
+  NOT_CONTAINS = 'Does not contain',
   GREATER = 'Greater than',
   LESS = 'Less than',
   IS_SET = 'Is set',
+  IS_EMPTY = 'Is empty',
+  STARTS_WITH = 'Starts with',
+  ENDS_WITH = 'Ends with',
 }
 
 const comparisonSchema = z.object({