help write formula

[Milosensas1]

Good afternoon,

I need help writing the following formula in appsheet,

In the excel file I have the following that works perfectly,

=EXTRAE(C7;HALLAR("-";C7;1)+1;999)

but appsheet is giving me an error and tells me that the "SEARCH" function is not supported by the application

MID(RC[-1],SEARCH("-",RC[-1],1)+1,999)

Can you help me in some function that accepts the application and makes me the same function?

Thanks for the help,