BQ27421EVM-G1B: Cannot set sleep current parameter in block data memory

Hi,  

I am attempting to set the sleep current on the EVM but I cannot write to this specific location.

The sleep current parameter is in the STATE block along with design capacity etc. but it spans two offset locations. The MSB is in offset 0x00 byte 31 and the LSB is at offset 0x01 byte 0.

So if I wanted to set the value to, say, 15mA, my understanding is I need write to offset 0x01 byte zero, which is byte 32 of the State block, however, the value will not write to this location.

I can write to ANY other location just fine,  eg.offset 0x00 byte 31 (the previous byte - and the MSB of the sleep current), offset 0x01 byte 1 (the next byte along),  but using the same code and just changing the index I am unable to write to this specific location.

Is there a particular way in which this location must be written to due to it spanning two blocks? 

Also, the value I read after reset is 0mA, not the default 10mA specified. Other values in the block follow defaults.

Any help would be greatly appreciated.

Regards,

Sean.