COMANDO MAP

[ivan]

good afternoon everyone, I want to use the "map " command in a program, but when I boot an error check .
This is the code I have:

EXPORT PRUEBA()
BEGIN
LOCAL a:={},m,X;X:=CAS.X;
a:={1,23,45,10,0};
m:=map(a,X→X<10);
m;
END;

I can say where the bad and what is the solution , thanks for your reply .