Extract data from HTTP URL

[Out Door]

Sorry up front.  I'm not a programmer so I don't get the lingo correct sometimes.

If I try using the HTTP Get function within tasker from a url say my Nest home account.  How do I allow for the entry of username and password?

As well how do i then extract the correct information from the page?  Do i use some sort of developer tool? I can identify the line in the developer display that has the info i want.

Or is it easier to use something like the DataMiner chrome addin and extract some info to a file?

I managed to extract the data i want using DataMiner to a file.  But again, unsure how to get that info into tasker.

Just don't know which method would be best and then automate.

[Out Door]

Here is what i've tried

HTTP Request

Get URL home.nest.com/####

Read File

test.txt to %temp

Variable Split

%temp splitter "Recroom temperature

Flash

%temp

I'm expecting a bunch of information to be displayed but all i get is

Found. Redirecting to /

[donkilluminati]

What does %http_data contain?