Send in column description "role: tooltip" from java about google-visualization-java HOT 1 OPEN

Hi,
I'm in the same situation... It looks like one should add both a role of type 'tooltip' and a property telling it to see it as html if one want to use custom tooltips... like ({'type': 'string', 'role': 'tooltip', 'p': {'html': true}})

Using
columnDescription = new ColumnDescription("7", ValueType.TEXT, "tooltip");
columnDescription.setCustomProperty("role", "tooltip");
columnDescription.setCustomProperty("p", "{html:true}");
columnDescriptions.add(columnDescription);

will not work as it comes out like

{ "id": "7", "label": "tooltip", "type": "string", "pattern": "", "p": { "p": "{html:true}", "role": "tooltip" }

Which is wrong... The JsonRenderer and its getPropertiesMapString method should not escape the { } with ", but it does... to me this is a bug. Sadly one has to download and build a new version to fix this issue.

from google-visualization-java.