Just pointing out another set of ModelState related tools that you (and others) may like.
One of these seems to contain a tool that sounds like an exact match for checking your request.
This appears to be a direct way get the 'localized' version of a supplied ModelState name.
Dim oMSName As String = "Master"
Dim oMSNUtils As New Autodesk.iLogic.Runtime.ModelStateNameUtils
Dim sLocalizedName As String = oMSNUtils.GetLocalizedName(oMSName)
MsgBox("The 'Localized' version of " & oMSName & " is: " & sLocalizedName, vbInformation, "iLogic")
The main tool being used there (ModelStateNameUtils) could be used without the "Autodesk.iLogic.Runtime" part, but I just added that so others would know where it is being sourced from, but the 'Runtime' source is already referenced for us automatically by the iLogic Add-in, when working within the iLogic Rule Editor dialog. However, I could not find an online help area web page which documents this tool, or I would have provided a link to it here. This tool appears to be somewhat of a 'behind the scenes' resource which appears to have most of the same functionality as the LanguageTools referred to by @CattabianiI. It has the following members:

Then there is the ModelStateUtils tool, which is also sourced from the 'Autodesk.iLogic.Runtime' reference, and also does not appear to have an online help webpage. This is a really helpful and interesting tool, with several 'members', and you do not need to 'instantiate' it (no need to create a variable for it, or use 'New' to create one), which is also really nice. Some of us may recognize some of these 'members' as having similar sounding normal API counterparts. Again, this may be a 'behind the scenes' resource type tool. Probably just for providing a 'shortcut' of sorts. This tool has the following 'members':

Then there is the ModelStateOperations tool, which is also from the Runtime source, and does not need to be instantiated, but only has two methods. Not super useful, but nice to know its there.

Then there are also a few ModelState related tools under the FileManager object (ThisApplication.FileManager), which there is actually a online help webpage for.
Wesley Crihfield

(Not an Autodesk Employee)