Increment list index by x

Revit
1

Hi all,

I am trying to update the revision sheets on one of my projects using Dynamo.

I don’t seem to be able to get the indexes on my list to update as I wont them, basically taking the sheet’s latest revision number and add “1”, i.e 001 + 1 = 002. I know this is mathematically incorrect but this is what I’m trying to achieve (as per the code blocks showing)

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Vikram is correct how to add padding.

The “+” node issue is happening because it will add the number to the end of the string input and not add them together.
This happens because the output from the parameter is a string and not a number, this will mean you would have to add the “String.ToNumber” node prior to inputting it to the “+” node to add the two numbers together.

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Untitled.png1037×545 30.9 KB

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For your code to work with numbers greater than 10 and less than 100, it will have to be extended a little
x<10?"00"+(x+1):"0"+(x+1);

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Also, one line IF statements can be nested, should you need to go to 4 characters or greater:

x < 10 ? “000” + x+1 : x < 100 ? “00” + x+1 : “0” + x+1;

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Hi guys,

Thank you for you helpful responses. This is how got my definition to work, mostly using Vikram suggestion.

List-Increment.PNG972×666 131 KB

I found that for normal lists all the suggestions seem to work however, when using data from a var… you need to add a few extra nodes, as per the image here.

Again, many thanks all

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Thanks for this! :slight_smile:

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Thank you Vikram

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Using Design Script…

20160720-6.png856×286 14.2 KB

String.PadLeft(String.ToNumber(n)+1+"",3,"0");

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