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BQ40Z50-R1: Control FET through SW and CHG FET Toggle?

Part Number: BQ40Z50-R1
Other Parts Discussed in Thread: EV2400

So I was trying to control FETs through SW (13.1.18 ManufacturerAccess() 0x0022 FET Control) and then toggle CHG FET (13.1.15 ManufacturerAccess() 0x001F CHG FET Toggle). For that I put device in UnSealed mode first, confirmed it's getting UnSealed through OpersationStatus() 0x54. Then send 0x0022 command to MAC, as soon as I send 0x0022 the battery would go dead and won't wake up. Is there any other step that needs to be done to enable controlling FET and then toggle CHG FET?

This is status of my OpersationStatus() 0x54 after I have UnSealed and wheb I'm sending 0x0022 command to control FET.

1110 0001 0100 0000 0000 0000 0000 0000

(0---------7) (8-------15) (16------23) (24-------31) - bit numbers

and this is status of my ManufacturerAccess() 0x0057:

0001 0110 0000 0000

(0--------7) (8---------15)

I'm sending 0x0022 command to enable FET_EN here which is 8th bit of ManufacturerAccess() so that I can toggle CHG/DCHG FETs.