The ShellSystemUserOptions object manages the additional personal preferences in scripting, created as persistent variables in SHELL.vb. Through the following read only property:

  Public Shared ReadOnly Property Options As ShellSystemUserOptions

    Get

      Return DirectCast(WinUI.ApplicationBase.Current.SystemUserOptions, ShellSystemUserOptions)

    End Get

  End Property

you can call it as:

<variable> = Options.<preference>

or, in original syntax:

<variable> = ShellSystemUserOptions.<preference>

An example:

If ShellSystemUserOptions.PLN_LastPublication > 0 Then

Define new persistent variable in Shell.vb

1.Open the add-in solution in VBExpress and then open Shell.VB.

2.Locate the following code:

<XmlRoot("ShellSystemUserOptions")> _

Public Class ShellSystemUserOptions

  Inherits SystemUserOptions

3.On the appropriate position below it, add a new line such as:

4.<XmlAttribute()> Public <variablename> As <variabletype> = <defaultvalue>

where:

o<variablename> is an unique name for the persistent variable,e.g. PLN_LastPublication or something similar. .

o<variabletype> is one of standard VB.NET types, as String, Boolean etc.

o<default value> is the default value for the variable, until user changes it.

You need to specify all of the above.