filtering sqlview result using value with a colon

We have a sql view that includes a timestamp in it (dhis2 version 2.29), and we are trying to filter the output, but get invalid filter error (409).

{

“httpStatus”: “Conflict”,

“httpStatusCode”: 409,

“status”: “ERROR”,

“message”: “Invalid filter => approvaltime:eq:2018-10-17 14:56:36.243”

}

Filtering by using just the date part works, but when time part is included, it comes back with the above. I suppose colon in the value is to blame, but have not seen any way of escaping it (at least nothing i’ve tried works - espacing : using %3A, among others, and documentation does not have anything either).

Is this something that is not supported?

Thanks,

Vlad