In Crystal Reports, insert a field in a text object, but dynamically

I want to add a field (formula field or a field from a table) into a text object like so:

CType(
rap.ReportDefinition.ReportObjects(strTexobjectName),
CrystalDecisions.CrystalReports.Engine.TextObject
).Text = strText
But when I add a field, let's say {@SomeField}, CrystalReports will show me the text "{@SomeField}" instead of the value of the field. I know I can resolve this problem by adding a formula field manualy to the text object and then setting the formula field to:

'Some text and' + {@SomeField}
, but I have a lot of text objects that need adding formula fields.

Thank you in advance!