Send command to MPPT Solar charger on VE.DIRECT

I am having some problems using the node-red inject node to turn no/off my Blue Solar mppt 150/70 - tr - it all worked fine with can bus and mod bus through the venus gx but am trying to control direct from the raspberry pi node-red flow. My problem is getting the correct payload message to inject up the serial link - From the VE.DIRECT Protocol Blue and smart solar MPPT Chargers document (quite difficult for me to understand) I can see that register 0x0202 bit 1 needs to be set to 1 to enable remote control and register 0x0200 needs to be 4 for off and 1 for on - I just need to know the payload type and exact messages please - many thanks in advance

I have now bee able to turn the solar charger off on the serial link
the inject string is ["0x3A","0x38","0x30","0x30","0x30","0x32","0x30","0x30","0x30","0x34","0x34","0x37","0x0A"]
still having a problem workin out the string for register 202 to enable remote control and the solar turn on string so some help would be appreciated please - thanks