Parameters
- strSettingPath
 - path to project settings
 - dValue
 - value to set.
 - nIdx
 - 0-based index of the setting
 
| Exception | Description | 
|---|---|
| System.ArgumentNullException | Thrown when strSettingsPath is null. | 
| Eplan.EplApi.Base.BaseException | Thrown when the value cannot be set. |