Mixing local and global variables

I’m stuck on how to set and update variables! I’d like to keep a running total of ‘acceptability’ and then report it back to the user at the end. Here’s my try but something’s catastrophically (and perhaps obviously?) wrong. The variables seem to be of the wrong types, and they also don’t update.

Minimum code below– fuller code here: https://farm.pcibex.net/r/eeUvts/

…
newVar(‘trCount’,0).global()
newVar(‘runAcc’,0).global()

Sequence(“init”,”consent”,”demographics”, “instr”, “example”, pick(exptrials, batch), “break”, pick(exptrials, batch), SendResults(), “results”)

…

Template(“diadia_items_2.csv”, row=>
newTrial(“experiment”,
newVar(‘trAcc’,0), // this one is local
newImage( row.picture).size(“auto”, “50vh”).center().print(),
newTextInput(“yours”, “”).log().size(300,30)
.settings.before(newText(“What do YOU usually call this?”)).center().print(),
newText(“Do other people in your community agree with you?”).center().print(),
newScale(“agree”,100).slider().default(50).settings.css(“font-size”, “24px”).size(“40vw”).css(“max-width”, “unset”).log(),
newCanvas(“container”, “40vw”, “2em”) // Container for layout
.add( “left at 0%” , 0, newText(“No”).settings.css(“font-size”, “24px”))
.add( “right at 100%”, 0, newText(“Yes”).settings.css(“font-size”, “24px”))
.add( “center at 50%”, 30, getScale(“agree”)).print(), // Add slider to canvas

// update vars
getVar(‘trAcc’).set(getScale(‘agree’)).log(), // this should be local– just the answer to the scale
getVar(‘runAcc’).set(v => v + getVar(‘trAcc’)).log(), // this one is global– the running accuracy total
getVar(‘trCount’).set(v => v + 1).log(), // global– total trial counts

newButton(“Next”)
.print()
.wait(),

));

// Final screen
newTrial(“results”,
defaultText.print().center(),
getVar(‘runAcc’).set(v => v / getVar(‘trCount’)),
newText(“Thank you for your participation!”),
newText(“You think you agree with your community “+runAcc+”% of the time.”), // not sure how to put this in to be evaluated
newText(“Please return to Prolific and enter the following code: “+uniqueID),
newButton().wait()
)
.setOption(“countsForProgressBar”,false ).noHeader();