Modbus BOOL holding register

Dear Support
I got a problem with the Modbus. I need to read and write BOOL value in holding register. I try some settings that is in Jigsaw but it only work as integer, and I realy like that bool style switches that you have made. So please if it is possible please add that to jigsaw or if it possible to do it now can you tell me how? My PLC can only read and write to holding register, it will be changed but for now it is what it is. Thanks.