Extract fields by partial name( property value data extraction by calling short name)

 I have a json with attribute names that start with some prefixes I need to ignore, and end with the actual field name:

{
    "context": {
        "values": {
            "group1:0:foo": "08119037",
            "group1:0:checkbox": [
                "2",
                "3"
            ]
        }
    }
}

I can extract the exact field group1:0:foo, but not "the field that ends with :foo":

{
    "foo": context.values.`group1:0:foo`
}

https://try.jsonata.org/9vruWw6HR

{

"context": {

"values": {

"group1:0:foo": "08119037"

}

}

}

method1:

$spread(context.values)[$match($keys($)[0], /.*:foo/)] {

$keys($)[0].$split(":")[2]: $.*

}

method2:

{

"foo": $lookup(context.values, context.values.$keys()[$contains($, 'foo')])

}