add_prop_int
err = add_prop_int(sensorhdl, 75,
err = add_prop_int(sensorhdl, env->sd_lo_warn /
err = add_prop_int(sensorhdl, env->sd_lo /
err = add_prop_int(sensorhdl, env->sd_hi_warn /
err = add_prop_int(sensorhdl, env->sd_hi /
static int add_prop_int(picl_nodehdl_t nodeh, int value, char *name);