Equation

Multiply input by 10 and truncate the last decimal place.

For example, if input = 0.14

0.14 x 10 = 1.40

Truncate last decimal for result of 1.4

Example Form Setup

Formal Expression

var SOURCE_VALUE_ITEM_NAME = 'LB_Alcohol Test Results Day 1';
var repeatKey = itemJson.item.itemGroupRepeatKey;
var origItem = findFirstItemByName(formJson, SOURCE_VALUE_ITEM_NAME, null, repeatKey);
var origValue = origItem.value;
var origDecimalPlaces = countDecimals(origValue);
var newValue = origValue * 10;
newValue = newValue.toFixed(origDecimalPlaces - 1);
return newValue;

function countDecimals(number) {
    if(Math.floor(number) === number) return 0;
    return number.toString().split(".")[1].length || 0; 
}

Documentation

Multiply and Truncate

Equation

Example Form Setup

Formal Expression