Harmony configurator and ifblock : how to do superior operator ? (Emcy)

Hello, In .ftl file, It doesn't operate if I do :ifblock FOO_VAR1 > 0
config FOO_VAR2${INSTANCE}
int "Foo_var3"
depends on FOO_VAR4${INSTANCE}
default 0
endif
ifblock FOO_VAR1 > 1
config FOO_VAR5${INSTANCE}
int ..