Need help please inserting variable data and user input.

Below is a screenshot of the page as displayed to the user.

The first table, EVENTS, is directly connected to a dataset (no code). Once an EVENTS record is selected, all of its referenced records are displayed in the second table, EVENT_DETAIL. When the user selects a row from EVENT_DETAIL, it populates the text box below in the third box, below the text that says “You’ve selected”.

From there, I would like to collect ‘title’ from the EVENT_DETAIL as well as the data the user input (Name, Email, Phone, etc…) and insert into a third table, VOLUNTEERS. This is where I am lost.

You will see in the code below, it does not recognize the values from the EventDetail function. I have tried all I know to correct the syntax, to no avail. Any assistance would be greatly appreciated! Thanks in advance.

// For full API documentation, including code examples, visit http://wix.to/94BuAAs
import wixData from 'wix-data';

$w.onReady(function () {

 //Setup the PFA_EVENT collection
    $w("#tblEvent").columns = [
      {
 "id": "col1",
 "dataPath": "title",
 "label": "EVENT NAME",
 "visible": true,
 "type": "string"
      },
      {
 "id": "col2",
 "dataPath": "desc",
 "label": "DESCRIPTION",
 "visible": true,
 "type": "string"
      },
      {
 "id": "col3",
 "dataPath": "display_date",
 "label": "EVENT DATE",
 "visible": true,
 "type": "string"
      },
      {
 "id": "col4",
 "dataPath": "major_fundraising",
 "label": "MAJOR_FUNDRAISING",
 "visible": true,
 "type": "string"
      }
    ];

 // select data from pfa_events
    wixData.query("PFA_EVENTS")
      .find()
      .then((results) => {
 // get the query result items
 let tableRows = results.items;
 // set the table row data
      $w("#tblEvent").rows = tableRows;
 
 //console.log(tableRows)

    });
 
 //Setup the PFA_EVENT_DETAIL table

    $w("#tblEventDetail").columns = [
      {
 "id": "col1",
 "dataPath": "title",
 "label": "POSITION",
 "width": 100,
 "visible": true,
 "type": "string"
      },
      {
 "id": "col2",
 "dataPath": "ped_desc",
 "label": "DESCRIPTION",
 "width": 100,
 "visible": true,
 "type": "string"
      },
      {
 "id": "col3",
 "dataPath": "display_date",
 "label": "DATE/TIME",
 "width": 100,
 "visible": true,
 "type": "string"
      },
      {
 "id": "col4",
 "dataPath": "available",
 "label": "AVAILABLE",
 "width": 100,
 "visible": true,
 "type": "string"
      }
 
    ];

}); //close onReady ????

// Only display the EVENT_DETAIL rows from the Event row selected and none until row selected.  

export function tblEvent_rowSelect(e) {
 //Add your code for this event here: 
 var selectedRow =  $w("#tblEvent").rows[e.rowIndex]
 
    wixData.query("PFA_EVENT_DETAIL")
     .gt("available", 0)
    .contains("pfa_event", selectedRow._id)
    .find()
    .then((results) => {
 // get the query result items
 let tableRows = results.items;
 var detailIds = results.items.map( det => det._id)
 var detailTitle = results.items.map( det => det.title)

 // set the table row data
      $w("#tblEventDetail").rows = tableRows;
      $w("#tblEventDetail").show();
 
 // set the displayed selection to null if switching events
      $w("#txtSelectedPosition").value = null;

      console.log(tableRows)
      console.log(detailIds)    
      console.log(detailTitle)    
 
    });
  console.log(selectedRow)

} //close function tblEvent_rowSelect

// now get the value selected from EVENT_DETAIL to pass to text box and write to volunteers
export function tblEventDetail_rowSelect(event) {
 //Add your code for this event here: 
 var selectedEdRow =  $w("#tblEventDetail").rows[event.rowIndex]

      wixData.query("PFA_EVENT_DETAIL")
 //.contains("pfa_event", selectedRow._id)
      .find()
      .then((results) => {
 // get the query result items
 let tableRows = results.items;
 //let tableIndx = results.items(0);
 
 //var EddetailIds = results.items.map( det => det._id)
 
        console.log('SELECTEDrOW'||selectedEdRow._id) 
        console.log('selectedEdRow'||selectedEdRow.title) 
        });

 // display selected event detail title in text box
      $w("#txtSelectedPosition").value = selectedEdRow.title;
 
} // close function tblEventDetail_rowSelect

export function submit_click(submitEvent) { 
 if (!$w('#txtFirstName').valid ||
        !$w('#txtLastName').valid ||
        !$w('#txtEmail').valid ||
        !$w('#nbrVolQuantity').valid ||
        !$w('#txtPhone').valid) {
         $w('#txtError').text = "One or more fields are not valid";
         $w('#txtError').show();
 return;
  } //close function submit_click 

 var data = {
 "first_name": $w('#txtFirstName').value,
 'last_name': $w('#txtLastName').value,
 //'email': $w('#txtEmail').value,
 'title': $w('#txtEmail').value,
 'phone': $w('#txtPhone').value,
 'quantity':$w('#nbrVolQuantity').value,
 'comments':$w('#txtComments').value,
 //'ped_title': $w('#dsEventDetail').getCurrentItem()._id,
 'ped_title': $w("#txtSelectedPosition").value = selectedEdRow._id,
  }; //THIS IS NOT RECOGNIZED HERE

  wixData.insert('PFA_VOLUNTEERS', data).
    then((e) => {
      console.log(e);
      $w("#txtSelectedPosition").value = selectedEdRow._id. //THIS IS NOT RECOGNIZED HERE
        then((results) => {
 //results.fulfilled = results.fulfilled + 1;
          results.fulfilled = results.fulfilled + parseInt($w('#nbrVolQuantity').value,10)
          wixData.update('PFA_EVENT_DETAIL', results).
          then(() => {
            $w('#dsEventDetail').refresh();
          });
        });
 
        $w('#txtError').hide();
        $w('#txtSuccess').show();
        $w("#txtFirstName").value = null; 
        $w("#txtLastName").value = null;
        $w('#txtEmail').value = null;
        $w('#txtPhone').value = null;
        $w('#nbrVolQuantity').value = null;
        $w('#txtComments').value = null;

      }).

 catch((e) => {
      console.log(e);
      $w('#txtError').text = e;
      $w('#txtError').show();
      })
 
}