how i quarrel 4-byte utf-8 characters?

i am minute little app i need exam utf-8 characters opposite array byte lengths.

i quarrel unicode characters exam encoded utf-8 1,2 3 bytes only glorious doing, example:

string = "pi = \u3a0";

but i unicode impression encoded 4-bytes? i have tried:

string = "aegan check symbol = \u10102";

which distant i know should outputting . nonetheless i imitation out i 0

what am i missing?

edit:

i got work adding streamer zeros:

string = "\u00010102";

wish i guess earlier :)