Greetings!

One can can set register levels with keys and entries

\setregisterentry[MyIndex]

[keys:1=Sorting Key Level 1,
entries:1=Entry Level 1,

keys:2=Sorting Key Level 2,
entries:2=Entry Level 2]

Rewriting the code in lua works until colon (:) is used.

\startluacode

context.setregisterentry({ "MyIndex" },
{ keys:1="C Level 1", entries:1="C Level 2"})

\stopluacode

which stops with error: <name> expected near '1'

Can the colon be escaped or underlying

\xdef\currentregisterkeysa{\registerparameter{\c!keys:1}}%
\xdef\currentregisterkeysb{\registerparameter{\c!keys:2}}%
\xdef\currentregisterkeysc{\registerparameter{\c!keys:3}}%

redefined? Tried without success.

MWE (mkiv, latest beta) attached.

Thank you,

Jano