Variable screen in WAD

i have couple of questions on variable screen while working with Web Application Designer
1) i am using variables with multiple single entries in my query and when the variable screen in WAD is displayed i have something called insert row icon for each of the variable i used. i do not want to display this icon. is it possible. when i have a single mandatory variable i don't see this icon
2) when i select a value for one of my variable, say for plant. then i only want the key to be displayed. whereas when i choose a particular plant i can see the key in the variable box and the text which describes the plant adjacent to the variable box. is it possible to display only key.
3) i have something like this
Plant Description
NJ New Jersey (description is seen adjacent to the key in the variable box)
now when i want to empty the screen and run the query for all plants i can delete the key but my description is still seen.
any idea
thanks

thanks for your responses. i have another problem which is similar to the above ones
i have variables with multiple single values as optional. now in the variable screen if i choose to enter more than one value, lets say 2 values for the plant then i have two values and its text adjacent to the selection box.
since i am using optional variable and if the user wants to run the report for all the plants then he comes back to the variable screen and has to empty the selection box. the problem is we can empty the selection box but we are not able to remove the text description adjacent to the selection box which the user says its confusing.
is there any way we can get rid of it. may be when we refresh the variable screen can we write a code which simply displays the empty variable screen.
any ideas gurus
thanks

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