Fix

src/Query/BuilderConverter/GreaterThan.php

@@ -23,7 +23,7 @@ readonly class GreaterThan implements IBuilderConverter
         return $builder->orWhere($this->argument->field, ">", $this->formatValue());
     }
 
-    private function formatValue(): int|float
+    private function formatValue(): int|float|string
     {
         $value = trim($this->argument->value);
         if (is_numeric($value)) {

src/Query/BuilderConverter/GreaterThanEquals.php

@@ -23,7 +23,7 @@ readonly class GreaterThanEquals implements IBuilderConverter
         return $builder->orWhere($this->argument->field, ">=", $this->formatValue());
     }
 
-    private function formatValue(): int|float
+    private function formatValue(): int|float|string
     {
         $value = trim($this->argument->value);
         if (is_numeric($value)) {

src/Query/BuilderConverter/LessThan.php

@@ -23,7 +23,7 @@ readonly class LessThan implements IBuilderConverter
         return $builder->orWhere($this->argument->field, "<", $this->formatValue());
     }
 
-    private function formatValue(): int|float
+    private function formatValue(): int|float|string
     {
         $value = trim($this->argument->value);
         if (is_numeric($value)) {

src/Query/BuilderConverter/LessThanEquals.php

@@ -23,7 +23,7 @@ readonly class LessThanEquals implements IBuilderConverter
         return $builder->orWhere($this->argument->field, "<=", $this->formatValue());
     }
 
-    private function formatValue(): int|float
+    private function formatValue(): int|float|string
     {
         $value = trim($this->argument->value);
         if (is_numeric($value)) {