add_action( 'woocommerce_check_cart_items', 'min_amount_of_order' );
// add_action( 'woocommerce_checkout_process', 'min_amount_of_order');
// add_action( 'woocommerce_before_cart' , 'min_amount_of_order');

function min_amount_of_order() {

	if(is_checkout() || is_cart()) {
		 global $woocommerce;
                 $minimum = 45; //for state 1
	  	 $state = array('BG-23');

         $cart_total_order = WC()->cart->total;

		 if( $cart_total_order < $minimum && in_array(WC()->customer->get_shipping_state(), $state )  ) {

	        wc_print_notice(
                sprintf( 'You must place an order for at least %s in your cart. Your order is currently worth %s' ,
                    wc_price( $minimum ),
                    wc_price( WC()->cart->subtotal )
                ), 'error'
            );
         }
	}

	if (is_checkout() || is_cart()){
	     global $woocommerce;
		 $minimum = 30; //for state 2
		 $state = array('BG-22');
		 $cart_total_order = WC()->cart->total;

		 if( $cart_total_order < $minimum && in_array(WC()->customer->get_shipping_state(), $state )) {

	        wc_print_notice(
                sprintf( 'You must place an order for at least %s in your cart. Your order is currently worth %ss' ,
                    wc_price( $minimum ),
                    wc_price( WC()->cart->subtotal )
                ), 'error'
            );
		}
	}
}