# Thinstall_RegExtension

> Makes it possible to set an extension.

Source: https://docs.capaone.com/capainstaller/vb-scripting-library/thinstall-functions/thinstall-regextension/  
Product: CapaInstaller — a separate CapaSystems product; do not apply this page to any other.

### Description

Makes it possible to set an extension

### Syntax

Thinstall_RegExtension(sName, sExtension, sCommand) As Boolean

### Parameters

#### sName (String)

Product name

#### sExtension (String)

Extension

#### sCommand (String)

Command to execute

### Example

**VBScript**

```vb
If bStatus Then bStatus = Thinstall_Init()
If bStatus Then bStatus = Thinstall_RegApplication("CapaInstaller")
If bStatus Then bStatus = Thinstall_RegExtension("CapaInstaller", ".cis", "C:\CapaInstaller.exe")
If bStatus Then bStatus = Thinstall_Complete()
```

[Scripting Guidelines](/capainstaller/vb-scripting-library/scripting-guidelines/)

### Related functions

[Thinstall_UnRegExtension](/capainstaller/vb-scripting-library/thinstall-functions/thinstall-unregextension/) [Constants](/capainstaller/vb-scripting-library/addendum/constants/) [Package Property](/capainstaller/vb-scripting-library/addendum/package-property/) [Variables](/capainstaller/vb-scripting-library/addendum/variables/)