diff --git a/src/array.go b/src/array.go
index 761bba7..be1caae 100644
--- a/src/array.go
+++ b/src/array.go
@@ -589,6 +589,14 @@ func ArArray(arr []any) ArObject {
 			return false, ArErr{}
 		},
 	}
+	val.obj["__Boolean__"] = builtinFunc{
+		"__Boolean__",
+		func(args ...any) (any, ArErr) {
+			return len(
+				arr,
+			) > 0, ArErr{}
+		},
+	}
 	return val
 }
 
diff --git a/src/map.go b/src/map.go
index b1cb488..470ea74 100644
--- a/src/map.go
+++ b/src/map.go
@@ -318,5 +318,17 @@ func Map(m anymap) ArObject {
 			return keys, ArErr{}
 		},
 	}
+	obj.obj["__Boolean__"] = builtinFunc{
+		"__Boolean__",
+		func(args ...any) (any, ArErr) {
+			mutex.RLock()
+			if len(m) == 0 {
+				mutex.RUnlock()
+				return false, ArErr{}
+			}
+			mutex.RUnlock()
+			return true, ArErr{}
+		},
+	}
 	return obj
 }
diff --git a/src/operations.go b/src/operations.go
index 759c90d..af5ac1c 100644
--- a/src/operations.go
+++ b/src/operations.go
@@ -626,7 +626,7 @@ func calcOr(o operationType, stack stack, stacklevel int) (any, ArErr) {
 		return resp, ArErr{}
 	}
 	resp, err = runVal(
-		o.value1,
+		o.value2,
 		stack,
 		stacklevel+1,
 	)
diff --git a/src/string.go b/src/string.go
index e6c173b..b129b37 100644
--- a/src/string.go
+++ b/src/string.go
@@ -639,5 +639,10 @@ func ArString(str string) ArObject {
 			}
 			return ArArray(output), ArErr{}
 		}}
+	obj.obj["__Boolean__"] = builtinFunc{
+		"__Boolean__",
+		func(a ...any) (any, ArErr) {
+			return len(str) > 0, ArErr{}
+		}}
 	return obj
 }