SuiteScript 2.0 Error: SSS_INVALID_SRCH_FILTER_EXPR_TYPE

Issue: a search throw error SSS_INVALID_SRCH_FILTER_EXPR_TYPE 

Malformed search filter expression, first two elements must be strings. 

Sample code that causing error: 

var strFormulaNumeric = 'CASE {custrecord_abc_id}';

    for (var i = 0; i < this.arrPriceTblId.length; i++) {

     strFormulaNumeric += ' WHEN \'' + this.arrPriceTblId[i]
       + '\' THEN ' + (i + 1);

    }
    strFormulaNumeric += ' ELSE 0 END';

...

var arrColumns = [];

...

    arrColumns.push(search.createColumn({

     name : 'formulanumeric',

     formula : strFormulaNumeric,

     sort : search.Sort.DESC

    }));

...

var strFormulaFilter = 'formulanumeric:' + strFormulaNumeric;
var arrFilters = [
                        [ 'isinactive', 'is', 'F' ],
                        'AND',
                        [ strFormulaFilter,
                                search.Operator.GREATERTHAN, 0 ] ];

...

Solution:

var arrFilters = [
                        [ 'isinactive', 'is', 'F' ],
                        'AND',
                        [ String(strFormulaFilter),
                                search.Operator.GREATERTHAN, 0 ] ];

We convert strFormulaFilter to a string again in JS, that works great :)

Great Idea:

When we have formula in the column, we sort it well; it's the best way to roll out data as specific reqirement;  works perfect :-)

Thanks site: 

Notes from: 

My best guess is that the Rhino interpreter parses string concatenation expressions into different Java classes than string literals/variables. The NetSuite API then fails to consider those classes when validating that an argument is a javascript “string”.

https://netsuitehub.com/forums/reply/re-record-getvalue-errors-if-field-name-is-built-programatically-5/

https://www.flowinglink.com/suitescript-2-0-sss_invalid_srch_filter_expr_type/