What is the control type for DataCardValue3? DataCardValue3.SearchText refers to a combobox searched value, if you want to have a Text Input from the user, you need to add a Text Input control in your data card. By default, it doesn't allows to add controls in a data card, you need to unlock properties from the right menu.
So, suppose a TextInput control is added with name "TextInput1", then your formula will get modified to :
Launch("mailto:" & TextInput3.Text & "?subject=" & TextInput1.Text)
or else, if you want to use the value selected from the combobox item:
Launch("mailto:" & TextInput3.Text & "?subject=" & Text(DataCardValue3.Selected.Result))
Here, if your attribute name is not Result, then you need to replace Result with the actual attribute that you want to pass.
Hope this Helps!
If this reply has answered your question or solved your issue, please mark this question as answered. Answered questions helps users in the future who may have the same issue or question quickly find a resolution via search. If you liked my response, please consider giving it a thumbs up. THANKS!
