[VFP] Issue in Text...EndText

[vfp9]

Describe the bug
The execution does not give the correct result if the value of the control is directly referenced in it.

To Reproduce
Steps to reproduce the behavior:

First create a form and add a Textbox to the form, assuming its Name property is Textbox1.
If we add a method to the form, the code for the method has code similar to the following:

        text to myTest NoShow TextMerge
            temp = <<This.Textbox1.Text>>
        endtext

The value of the variable myTest is not what we expected.

In version 2.21.0.5, if you need to get the correct result, you can only use the following code:

        a1 = This.Textbox1.Text

        text to myTest NoShow TextMerge
            temp = <<a1>>
        endtext