Function slint_interpreter_component_instance_set_global_property 

#[unsafe(no_mangle)]
pub extern "C" fn slint_interpreter_component_instance_set_global_property(
    inst: &ErasedItemTreeBox,
    global: Slice<'_, u8>,
    property_name: Slice<'_, u8>,
    val: &Value,
) -> bool

Available on crate feature ffi only.