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and there is another thing i want to do , ( a text_item displays the aggregation of the tests he chooses after each choise) , which means ,
when he double clicks the first test ,then the text-item(ti) holds the price "20" for instance , then he chooses the second test which costs "30" , after 30 is displayed , i want the aggregate item displays "50" , and if he chooses another test which costs 40 , then the aggregate item displays "90" .??
thanks in advance
If I understood your requirement, then
You create two text item.Hide the second item (visible no)
Dispaly the first item, and When validation for first item write when validate item (hide fist and display second on the same cooridate)
Now you got values for first and second
Store it to a variable for your manipulated display
Hope you got the idea
You have to be more specific about what exactly you have problems with. As i understodd you have a tree with all available tests. On doubleclick you want to assign that test to a block right of your tree? I would create a new record for each test assigned. In the block have two items, one for the test and one for the price.
For the summary of all prices, use a formula-item.
the user double-clicks a node > it's assigned to "choosen tests" > the price of the first choosen test is displayed on the price field next to it > the second choosen test's price is displayed on the price field next to it > and finally the price summary aggregate the prices of the price fields .
this a link to a pic of the form