Tcl script, for library manipulation

How about a log file of you changes and what you want to do if the Property already exists? DboState returns success / failure, you will see DboState used to track status in any of the supplied examples.

Force: what you want to do if the Property already exists. The Database TCL routines are all documented in the PDF in tools\Capture\tclscripts in the product installation. Strictly speaking, all TCL functions handle "text", the "text" values can contain references to objects and that is how it is possible to handle objects when "text" is the only "type".

Thank you oldmouldy :)

the drawback of this PDF is, they never explains any script. therefore cant get an idea.if you're so kind, one last question,two lines from script" adding property to schematics"
Set lstatus [Dbostate]
set pPartInstsIter [$pPage NewPartInstsIter $lStatus]
set pInst [$pPartInstsIter NextPartInst $lStatus]

if you are so kind,can you please explain these above two lines. inferences of mine,
1. a variable called pPartInstsIter is set by value obtained by executing NewPartInstsIter with parameters pPage and lStatus.
2. second one is same like this. i understood two commands seperately.what is the logic here? what contains (the value) inside pPartInstsIter, pInst ,lstatus. all contains text!!!??..

thanks for all support.

See page 29 and on in the PDF for reference iterating over the design and the previous section on "how TCL works". These three lines start with getting a reference to DboState, this needs to get passed to return the Status, the next line gets a reference to a NewPartInstIter, a function to iterate over all of the Part Instances, in this case on a Page because a reference to a Page was also passed, the next line gets reference to a Part Instance from the NextPartInst function from the NewPartInstsIter and also gets the Status reference passed. Probably the next thing to check is that the "pInst" returned isn't "null" as that would indicate the end of the Part Insts iteration, assuming that the "pInst" is valid, operations could be invoked using the Part Inst.