# Replace

Replaces characters that match a regular expression with a specified string.

## Arguments

| Arguments | Definitions |
| --- | --- |
| Input value | Specify the string in which the replacement is to be<br>performed. |

## Properties

| Properties | Definitions |
| --- | --- |
| Pattern | Enter a regular expression defining the pattern that the string<br>must match to be replaced.<br><br>This property is also available as<br>an argument. If you specify both, the argument value is used and<br>the property value is ignored. |
| Replacement string | Enter a string that replaces the existing characters identified<br>by the pattern.<br><br>This property is also available as<br>an argument. If you specify both, the argument value is used and<br>the property value is ignored. |
| Only first<br>occurrence? | Select this check box to replace only the first occurrence of the<br>pattern in the specified input value. |