An unescaped ampersand in project path

error inside:

public XmlDocument GetPowerMillParameterXML(string getParameterString)
{
var xmlResponse = new XmlDocument();
var response = _powerMILL.GetParameterXML(getParameterString);
if (string.IsNullOrWhiteSpace(response))
{
return null;
}
xmlResponse.LoadXml(response);
return xmlResponse;
}

getParameterString="project_pathname(false)"
print par $project_pathname(false) = X:/XXXXX/3723, TEST RIGS & MOCK-UPS/3723-5602,JIG,C CHANNEL

& - causes System.Xml.XmlException: An error occurred while parsing EntityName. Line 1, position 64.

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************** Exception Text **************
System.Xml.XmlException: An error occurred while parsing EntityName. Line 1, position 64.
at System.Xml.XmlTextReaderImpl.Throw(Exception e)
at System.Xml.XmlTextReaderImpl.Throw(String res, String arg)
at System.Xml.XmlTextReaderImpl.ParseEntityName()
at System.Xml.XmlTextReaderImpl.ParseEntityReference()
at System.Xml.XmlTextReaderImpl.Read()
at System.Xml.XmlLoader.LoadNode(Boolean skipOverWhitespace)
at System.Xml.XmlLoader.LoadDocSequence(XmlDocument parentDoc)
at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)
at System.Xml.XmlDocument.Load(XmlReader reader)
at System.Xml.XmlDocument.LoadXml(String xml)
at CallSite.Target(Closure , CallSite , XmlDocument , Object )
at Autodesk.ProductInterface.PowerMILL.PMAutomation.GetPowerMillParameterXML(String getParameterString)
at Autodesk.ProductInterface.PowerMILL.PMProject.get_Directory()
at PowerMill_Tools.Form1.btnReloadLists_Click(Object sender, EventArgs e) in \\xxxx\Form1.vb:line 1278

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PS C:\Users\Artur.Boszczyk> [System.Reflection.Assembly]::GetAssembly([System.Xml.XmlDocument]).GetName().Version
Major Minor Build Revision
----- ----- ----- --------
4 0 0 0

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Autodesk PowerMill Ultimate 2025
Version: 2025.0.1.2025012
Windows 11 25H2

Start at GetPowerMillParameterXML, especially the response handling immediately before XmlDocument.LoadXml. Reproduce the project_pathname(false) case with the ampersand in the returned path, then verify that the resulting XML parses successfully without the XmlException.

Written by the indexing model from the issue text.