Millisecond Forums

Hello!
I am designing a study where participants see a list of about 200 traits and have to select 80 in order to continue. I am using the checkboxes element so that they can make multiple selections. I also have the traits spread over 4 different checkboxes, so that I could create multiple columns. They are shown an error message if they do not select 80 traits. I wanted to know if:
1. There is a way to insert a live counter which would show the participant how many traits they've already selected. For example, if they've selected 10 traits so far the counter would show 10 on the screen. 
2. If not, then is there a way to make sure that the participants maintain their previously selected choices after viewing the error message? Right now, they see the error message, and are then routed back to the survey page, but lose all of their previous selections.
I appreciate any advice! Here is the script which contains all of the relevant elements for this task:

<surveypage X_traits_1>
/ caption = "Choose 80 traits that best describe <%item.novelperson.item(values.personXnumber)%>..."
/ questions = [1 = X_traits_1; 2 = X_traits_2; 3 = X_traits_3; 4 = X_traits_4]
/ nextbuttonposition = (75%, 260%)
/ showpagenumbers = false
/ branch = [if ((checkboxes.X_traits_1.selectedcount + checkboxes.X_traits_2.selectedcount + checkboxes.X_traits_3.selectedcount + checkboxes.X_traits_4.selectedcount) != 80) trial.error_1]
/ stimulusframes = [1=selectedcount1]
</surveypage>

<text selectedcount1>
/ items = ("<%checkboxes.X_traits_1.selectedcount + checkboxes.X_traits_2.selectedcount + checkboxes.X_traits_3.selectedcount + checkboxes.X_traits_4.selectedcount%>")
/ position = (85%, 10%)
</text>

<checkboxes X_traits_1>
/ options = ("smart", "funny", "friendly", "fun", "kind", "outgoing", "talented", "adventurous",
"interesting", "nice", "driven", "social", "athletic", "creative", "extraverted", "hardworking",
"involved", "honest", "organized", "caring", "independent", "open-minded", "positive", "thoughtful",
"approachable",
"careless", "boring", "disorganized", "rude", "lazy", "indecisive", "quiet", "pessimistic", "annoying",
"dumb", "arrogant", "unfocused", "unfriendly", "impulsive", "selfish", "serious", "unsure", "weird",
"basic", "distracted", "judgmental", "loud", "meek", "messy", "aloof", "antisocial", "awkward",
"close-minded", "conceited", "crude")
/ position = (15%, 15%)
/ order = random
/ required = false
</checkboxes>

<checkboxes X_traits_2>
/ options = ("brave", "calm", "carefree", "easygoing", "happy", "humble", "joyful", "motivated", "passionate",
"analytical", "chill", "confident", "diligent", "engaged", "goal-focused", "loyal", "personable",
"respectful", "studious", "well-spoken", "accepting", "accomplished", "active", "adaptable", "affable",
"egocentric", "hasty", "immature", "impatient", "inconsistent", "insecure", "negative", "obnoxious", "overbearing",
"regretful", "rigid", "try-hard", "vague", "bothered", "braggy", "busy", "chaotic", "cliquish",
"cold", "competitive", "condescending", "confusing", "cowardly", "crazy", "cynical", "demeaning", "detached",
"disrespectful", "distant", "ditzy")
/ position = (35%, 15%)
/ order = random
/ required = false
</checkboxes>

<checkboxes X_traits_3>
/ options = ("amazing", "ambitious", "artistic", "aware", "balanced", "careful", "compassionate", "cultured",
"curious", "deep-thinker", "descriptive", "direct", "eager", "engaging", "entertaining", "explorative",
"future-focused", "genuine", "hardworker", "healthy", "interactive", "laid-back", "leader", "likeable",
"mature",
"dry", "dull", "eccentric", "fearful", "flustered", "foolish", "forgetful", "frivolous", "generic",
"guarded", "hesitant", "ignorant", "inactive", "indifferent", "insincere", "intimidating", "introvert", "irresponsible",
"irritating", "jealous", "kill-joy", "lonely", "nerdy", "one-dimensional", "overconfident", "overwhelmed", "overwhelming",
"preoccupied", "reckless", "regular")
/ position = (55%, 15%)
/ order = random
/ required = false
</checkboxes>

<checkboxes X_traits_4>
/ options = ("mindful", "normal", "opportunist", "outdoorsy", "peaceful", "planner", "quirky", "realistic",
"relaxed", "reliable", "resilient", "responsible", "self-aware", "sociable", "spirited", "stable",
"supportive", "thorough", "truthful", "understanding", "visionary", "well-mannered", "well-rounded", "wise",
"risky", "self-absorbed", "shallow", "simple", "snobbish", "stressed", "stringent", "stupid", "tired",
"typical", "unapproachable", "uncharming", "uncool", "unenergetic", "unexciting", "unimaginable", "unintellectual", "unintelligent",
"uninteresting", "uninvolved", "unmotivated", "unorganized", "unoriginal", "unproductive", "unserious", "untalkative")
/ position = (75%, 15%)
/ order = random
/ required = false
</checkboxes>

<text error>
/ items = ("You must select 80 traits.")
/ txcolor = red
/ position = (50%, 50%)
/ fontstyle = ("Arial", 4%)
</text>

<text back>
/ items = ("<< Go Back")
/ position = (50%, 90%)
/ fontstyle = ("Arial", 3%, false, false, true, false, 5, 0)
/ txcolor = blue
</text>

<trial error_1>
/ stimulusframes = [1=error, back]
/ correctresponse = (back)
/ inputdevice = mouse
/ branch = [if (trial.error_1.correctstreak >= 1) surveypage.X_traits_1]
</trial>