# IsMatchRegEx
| **Name** | ***IsMatchRegEx*** |
| ----------- | ------------------------------------------------------------------------------------------------------------------------------- |
| Syntax | IsMatchRegEx (String pattern, String str) |
| Purpose | To return true if the regular expression found a match in the string. Otherwise, returns false. |
| Description | Indicates whether the regular expression finds a match in a specified string value by returning a boolean value. |
| Return Type | Boolean |
| Parameters |
pattern \[System.String] – Regular expression pattern to match
str \[System.String] – String to search for a match
|
**Example**
In this example, we will pass the required parameters to the function transformation object using a *Variables* object.
Where,
*Pattern* = {x,y}
*String* = A,2
In the output window, you can see that Astera has returned “False”, as the specified string does not match the specified pattern value.
