I have a JSON string as follows:
`
var json_string =
[
{"ColumnName": "Column1", "Counts": 5, "Percentages": 30},
{"ColumnName": "Column2", "Counts": 10, "Percentages": 20},
{"ColumnName": "Column3", "Counts": 7, "Percentages": 40},
{"ColumnName": "Column4", "Counts": 45, "Percentages": 12},
{"ColumnName": "Column5", "Counts": 32, "Percentages": 32}
]
`
How do I get the value Column4's Counts value?