XDataClientResponse Stopped Working

[AndrewSimard]

Maybe this will help... There was a breaking change around XData 5.8 that might relate to your Response.ResponseText error.

Web core Client - how to load Json from Xdata server direct into WebDBDataset/Grid

Ok, mixing asm code can be a little bit complicated. You can simplify things by using this approach: var Blob: JSValue; JsText: string; begin Blob := Response.Result; asm JsText = await (Blob.text()); end;