Marinate okra and potatoes with above spices. and keep them separately.
Heat oil in a wok, fry marinated okra and potatoes separately. fry onions and keep all them aside.
Fry slanted green chillies too.
In a same wok add potatoes, okra, fried onions and chillies.
Cook for 2 to 3 minutes or more. add salt if needed.
Garnish it with coriander leaves and serve it hot with masala paratha.