You can find the values for the stylealternative key in stix-two-math.lfg.
\setupbodyfont[stixtwo]
\starttext
\m{\mathscript C}
\setupmathematics[stylealternative=calligraphic]
\m{\mathscript C}
\stoptext
Wolfgang
Fabrice Couvreur schrieb am 10.08.18 um 02:27:
Hello,
Is it possible to get this type of letter with ConTeXt ?
Thank you
Fabrice