diff --git a/application/Espo/Core/Formula/Functions/StringGroup/PosType.php b/application/Espo/Core/Formula/Functions/StringGroup/PosType.php
new file mode 100644
index 0000000000..9784596ec3
--- /dev/null
+++ b/application/Espo/Core/Formula/Functions/StringGroup/PosType.php
@@ -0,0 +1,51 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM - Open Source CRM application.
+ * Copyright (C) 2014-2019 Yuri Kuznetsov, Taras Machyshyn, Oleksiy Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * EspoCRM is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EspoCRM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EspoCRM. If not, see http://www.gnu.org/licenses/.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Formula\Functions\StringGroup;
+
+use \Espo\Core\Exceptions\Error;
+
+class PosType extends \Espo\Core\Formula\Functions\Base
+{
+    public function process(\StdClass $item)
+    {
+        $args = $item->value ?? [];
+
+        if (count($args) < 2) throw new Error("Bad arguments passed to function string\\pos.");
+
+        $string = $this->evaluate($args[0]);
+        $needle = $this->evaluate($args[1]);
+
+        if (!is_string($string)) {
+            return false;
+        }
+
+        return mb_strpos($string, $needle);
+    }
+}
\ No newline at end of file
diff --git a/tests/unit/Espo/Core/Formula/FormulaTest.php b/tests/unit/Espo/Core/Formula/FormulaTest.php
index be454fca6f..ff1fa4cf6c 100644
--- a/tests/unit/Espo/Core/Formula/FormulaTest.php
+++ b/tests/unit/Espo/Core/Formula/FormulaTest.php
@@ -2816,6 +2816,47 @@ class FormulaTest extends \PHPUnit\Framework\TestCase
         $this->assertEquals('12', $actual);
     }
 
+    function testPps()
+    {
+        $item = json_decode('
+            {
+                "type": "string\\\\pos",
+                "value": [
+                    {
+                        "type": "value",
+                        "value": "1234"
+                    },
+                    {
+                        "type": "value",
+                        "value": 23
+                    }
+                ]
+            }
+        ');
+
+        $actual = $this->formula->process($item, $this->entity);
+        $this->assertEquals(1, $actual);
+
+        $item = json_decode('
+            {
+                "type": "string\\\\pos",
+                "value": [
+                    {
+                        "type": "value",
+                        "value": "1234"
+                    },
+                    {
+                        "type": "value",
+                        "value": 54
+                    }
+                ]
+            }
+        ');
+
+        $actual = $this->formula->process($item, $this->entity);
+        $this->assertFalse($actual);
+    }
+
     function testBundle()
     {
         $item = json_decode('