lvt1325

@flexdeviser: I met the same problem. It's gone when I set width and height for the canvas or parent element

Me too. This parser requires Type and Value in an array. https://github.com/castle-it/dynamic-linq-query-builder

thanks @whittssg , I have a similar idea for a workaround. Put the type in the property name, then split it at BE FE: config: QueryBuilderConfig = { fields: {...