question MRVS Onsubmit Trim spaces in ServiceNow Studio forum

MRVS Onsubmit Trim spaces

Rajeevreddy — Mon, 11 Aug 2025 16:42:04 GMT

Hi All ,

I have catalog item i am using varible set under it i have multi row variable set in that i have one field called test which is a single line text . before submitting form if i have any spaces before it should clear . how do i do .

  var str = g_form.getValue('variable_1');
        var wsr = str.trim();
        g_form.setValue('variable_1',wsr );

This is the one i used

Re: MRVS Onsubmit Trim spaces

Bhimashankar H — Mon, 11 Aug 2025 17:03:16 GMT

Hello @Rajeevreddy ,

You won't be able set like that, it is not simple getting the values from MVRS and setting.

MVRS values are accessed as a JSON string. like a array.

You can use above code to trim the "test" field in MVRS.

Thanks,
Bhimashankar H

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Re: MRVS Onsubmit Trim spaces

Chaitanya ILCR — Mon, 11 Aug 2025 17:05:13 GMT

Hi @Rajeevreddy ,

Did you create the client script in the MVRS (variable set)?

if not create the client script in the MVRS as you are saying the variable you want to trim spaces against is in the mvrs

function onSubmit() { g_form.setValue('variable_1', g_form.getValue('variable_1').trim()); }

Please mark my answer as helpful/correct if it resolves your query.

Regards,
Chaitanya

Re: MRVS Onsubmit Trim spaces

Rajeevreddy — Mon, 11 Aug 2025 17:51:39 GMT

Its not working chaitanya . It works only on portal if i submit from classis view its not working

Re: MRVS Onsubmit Trim spaces

Rajeevreddy — Mon, 11 Aug 2025 17:52:10 GMT

Hi Bhima , Its not working

Re: MRVS Onsubmit Trim spaces

Bhimashankar H — Mon, 11 Aug 2025 18:59:25 GMT

Hey @Rajeevreddy ,

It is working code; I made simple for you. Try it out.

function onSubmit() { var raw = g_form.getValue(mrvsName); if (!raw) return true; var rows = JSON.parse(raw); // MRVS returns JSON array of row objects for (var i = 0; i < rows.length; i++) { var v = rows[i]['test']; var trimmed = v.trim(); // removes leading/trailing spaces rows[i]['test'] = trimmed; } g_form.setValue(mrvsName, JSON.stringify(rows)); return true; }

I would suggest first write above code in any other field on change script. Ensure that you first filled the MVRS then change the other field. then this code will execute. Once it is executed then again click on pencil icon on this MVRS then check if spaces are removed or not.

I checked it on my PDI, it is working. If you observe keenly, it won't show the space when you look on form but when you open that row on MVRS then you will see if this code is removed the spaces or not.

Thanks,
Bhimashankar H

Re: MRVS Onsubmit Trim spaces

Rajeevreddy — Mon, 11 Aug 2025 21:00:05 GMT

Hi Bhima , Did i miss anything or i am referencing it wrongly ?

Re: MRVS Onsubmit Trim spaces

Bhimashankar H — Tue, 12 Aug 2025 04:07:47 GMT

Try on some onChange script first

Thanks,
Bhimashankar H

Re: MRVS Onsubmit Trim spaces

Ankur Bawiskar — Tue, 12 Aug 2025 05:01:14 GMT

@Rajeevreddy

why not add validation on change of that variable within MRVS?

you can use onChange, trim the space and set the value again, but remember you are setting value again and onChange will trigger again so it should not go in loop

If my response helped please mark it correct and close the thread so that it benefits future readers.

Re: MRVS Onsubmit Trim spaces

Ankur Bawiskar — Tue, 12 Aug 2025 14:18:02 GMT

@Rajeevreddy

Thank you for marking my response as helpful.

As per new community feature you can mark multiple responses as correct.

If my response helped please mark it correct as well so that it benefits future readers.