I am using Robot-framework selenium2.0.
In the robot test I made, it fills out a form and save it. In the form, I have to put some numeric values in some text boxes but somehow the previous\default value of 0.0 is not removed from any of the box. When I run the test normally it puts the values after 0.0. For example I want to put 50 in the box but the test puts 50 after 0.0 so it becomes 0.050 and when it switches to next text box the value becomes NaN.
Here is how I am doing it,

```
wait until element is visible       text_field     
click element     text_field 
input text        text_field     50

```

Is there any ascii codes that can be used to select values (ctrl+a) and delete the values first and then use input text to input values?