Can we use an ignore bin of a coverpoint inside a cross coverage as i have tried below
covergroup i2c_cg;//{
		ADDRESS: coverpoint `TX.addr{
				bins ADDR = {7'h27};
				ignore_bins OTHER_ADDR = {!{7'h27}}; 
		}
		ACKN: coverpoint `TX.ack{
				bins ACK = {0};
				bins NACK = {1};
		}
		
		ACKN_X_ADDR: cross ACKN, ADDRESS {
				illegal_bins = binsof(ADDRESS.OTHER_ADDR) && binsof(ACKN.ACK);
				illegal_bins = binsof(ADDRESS.ADDR) && binsof(ACKN.NACK);
		}
	endgroup//}