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Detail Table - Hide Parent - Strange Problem

I have a strange problem whereby I have a detail table that I am conditionally hiding entire rows if they meet a certain criteria

I have 2 rows almost identical, one conditional statement works correctly, the other always hides the row even though criteria doesn’t match…See below code

Working conditional statement (hides the entire row if code = 092)

results.each(function(index) {
var field, result = 0;

for(let i=0;i<record.tables.detail2.length;i++){

field = record.tables.detail2[i].fields["Code"];
if(["092"].indexOf(field) > -1) {
	result += record.tables["detail2"][i].fields["ANoPostP"];
}

}

results.html(formatter.currency(result));

// Hide the parent (row)
if( field !== "092") {
	this.parent().hide();
}

});

The below conditional statement always hides the row for some reason (should only hide the entire row if code does not = 091)

results.each(function(index) {
var field, result = 0;

for(let i=0;i<record.tables.detail2.length;i++){

field = record.tables.detail2[i].fields["Code"];
if(["091"].indexOf(field) > -1) {
	result += record.tables["detail2"][i].fields["ANoPostP"];
}

}

results.html(formatter.currency(result));

// Hide the parent (row)
if( field !== "091") {
	this.parent().hide();
}

});

They are exactly the same except that the 1st (working) code is checking for “092” and the second (non-working) code is checking for “091”

What am I missing?