kairi indicator

Does anybody have kairi indicator code for amibroker?
with regards
G.H.Kuamr

E21=EMA(C,21);
K=(abs(E21-C)/E21)*100;

Plot(K,"K",colorBlue,styleLine);
Plot(10,"",colorRed,styleLine); //sell
Plot(1,"",colorGreen,styleLine); //buy