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 # GetUserConcentration 

 Last update: 17.07.2025 

## Description

Gets the user concentration of the material defined in the User Material Editor.

## Syntax

*object*.GetUserConcentration() As Double

- *object*: User Material Editor object
- *Returned value*: User concentration (double)

## VB script example

```VB
strMaterialFile = "MyPath\SPEOS input files\Rohm_PLEXIGLAS_8N_65621_green.material"
Set OPTISMaterialViewer = CreateObject("UserMaterialViewer.Application")
OPTISMaterialViewer.OpenFile(strMaterialFile)
MyConcentration = OPTISMaterialViewer.GetUserConcentration()
OPTISMaterialViewer.SaveFile(strMaterialFile)


```

## IronPython example

```
from System import Type, Activator
type = Type.GetTypeFromProgID("UserMaterialViewer.Application")
MyUserMaterialViewer = Activator.CreateInstance(type)
strMaterialFile = "MyPath\\SPEOS input files\\Rohm_PLEXIGLAS_8N_65621_green.material"
OPTISMaterialViewer.OpenFile(strMaterialFile)
MyConcentration = OPTISMaterialViewer.GetUserConcentration()
OPTISMaterialViewer.SaveFile(strMaterialFile)


```