Thank you for getting back.
As of the screenshot provided and the previously shared information I would like to kindly ask for some further clarification. It seems that the text block does not have a name so this would not be an option to locate it.
Though the TextContent should be working if it is unique on the page. The approach you have listed should work if you include the actual TextContent:
var txtBlock = WindowScreenActuarialAssumptions.MainWindow.Find.ByTextContent("Element'sTextContent
Have you tried and what the result would be?
Please if you would need further assistance would it be possible to provide a sample application which contains such an element - this would be the easiest way to find a solution for the encountered difficulty.
Thank you in advance for the cooperation!