Roku Developer Program

[Grumpee1]

Running the debugger on Visual Studio Code on a Roku channel I am creating and I am getting an Invalid value for left-side of expression error pointing at: screen = CreateObject("roSGScreen")

Here is the debugger output and main.brs code. Very new to this and would appreciate some help.

Output:

04-13 22:15:03.483 [scrpt.ctx.run.enter] UI: Entering 'NationExtremeWrestling', id 'dev'

------ Running dev 'NationExtremeWrestling' main ------

BrightScript Micro Debugger.

Enter any BrightScript statement, debug commands, or HELP.

Current Function:

001:  sub Main()

002:    m.top.global = {

003:      api_key: "AIzaSyCn9WZzbJdT7XsQOuLYv-kQNmCFbUQ2jQI",

004:*     youTubeApiBaseUrl: "https://www.googleapis.com/youtube/v3/"

005:    }

006:  

007:      screen = CreateObject("roSGScreen")

008:      m.port = CreateObject("roMessagePort")

Source Digest(s):

pkg: dev 0.0.0 b434e374 NationExtremeWrestling

Invalid value for left-side of expression. (runtime error &he4) in pkg:/source/main.brs(4)

Backtrace:

#0  Function main() As Void

   file/line: pkg:/source/main.brs(7)

Local Variables:

global           Interface:ifGlobal

m                roAssociativeArray refcnt=2 count:0

screen           <uninitialized>

scene            <uninitialized>

msg              <uninitialized>

Main.brs:

sub Main()

  m.top.global = {

    api_key: "AIzaSyCn9WZzbJdT7XsQOuLYv-kQNmCFbUQ2jQI",

    youTubeApiBaseUrl: "https://www.googleapis.com/youtube/v3/"

  }

    screen = CreateObject("roSGScreen")

    m.port = CreateObject("roMessagePort")

    screen.setMessagePort(m.port)

    scene = screen.CreateScene("VideoScene")

    screen.show()

    while true

      msg = wait(0, m.port)

      if type(msg) = "roSGScreenEvent"

        if msg.isScreenClosed() then exit while

      end if

    end while

  end sub

[TwitchBronBron · Accepted solution]

The error message is actually complaining about line 4:

Invalid value for left-side of expression. (runtime error &he4) in pkg:/source/main.brs(4)

I don't think you are allowed to completely reassign m.top.global. so try doing m.top.global.api_key = "AIzaSyCn9WZzbJdT7XsQOuLYv-kQNmCFbUQ2jQI"

m.top.global.youTubeApiBaseUrl = "https://www.googleapis.com/youtube/v3"

Also, m.top.global.might not be assigned at that phase.of the app. So it might still fail. 

[Grumpee1]

Thanks so much, fixed the error and you were right, it doesn't seem like it has been assigned so there was a failure. Will work on it some more. Thanks again!

[TwitchBronBron]

m.global isn't available in the main thread by default. We usually do something like this in our apps

sub main()
    ...stuff
    screen = createObject("roSGScreen")
    m.global = screen.getGlobalNode()
    ...more stuff
end sub