I am new in XSLT and need some help, I am getting an Original XML below which I need to transform as a Transformed XML
Original
<?xml version="1.0" encoding="UTF-8"?>
<cXML payloadID="121" timestamp="2022-09-12" version="1.2.031" xml:lang="en-US">
<Header>
<From>
<Login domain="RollID">
<Value>ABC12100</Value>
</Login>
<Login domain="NameID">
<Value>BOB</Value>
</Login>
<Login domain="CourseID">
<Value>Default</Value>
</Login>
</From>
<Header>
<OrderID>
<OrderHeaderID sampleID="sdhjgwsd" orderDate="TEST-2022-09-12T21:30:31+02:00" orderID="66625" orderType="regular" orderVersion="1" type="new">
</OrderID>
</cXML>
Transformed XML
<?xml version="1.0" encoding="UTF-8"?>
<cXML payloadID="121" timestamp="2022-09-12" version="1.2.031" xml:lang="en-US">
<Header>
<From>
<Login domain="RollID">
<Value>ABC12100_TEST</Value>
</Login>
<Login domain="NameID">
<Value>BOB</Value>
</Login>
<Login domain="CourseID">
<Value>Default</Value>
</Login>
</From>
<Header>
<OrderID>
<OrderHeaderID sampleID="sdhjgwsd" orderDate="2022-09-12T21:30:31+02:00" orderID="66625_**TEST**" orderType="regular" orderVersion="1" type="new">
</OrderID>
</cXML>
I need value of OrderId and cXML/Header/From/Login[@domain='RollID']/Value to be appended with TEST as mentioned in transform XML. Please help !!