How to get correct HAE values using Timble R10 (GNSS Status)?

[SteveKim1]

I am connecting to the Trimble R10 receiver along with the GNSS Status app. It is showing my HAE values as being negative. I do not know why that is the case and trying to get the HAE to the correct values. Any suggestions or solutions would be so great! 

[HollyBrackett]

Maybe this link will help you figure it out.  Mean Sea Level heights in Trimble Positions |