UiDemo Walkthrough 1.1. In Process: input arguments become null

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1

I’m trying to reproduce the UiDemo Workthrough in the Robotic Enterprise Framework, Level 3 - Advanced Training.

In the last step, in Process Transaction in the Main file, I’m sending arguments using Invoke workflow to the Process. There I got an error, so I went into debug mode and found that “in_TransactionItem” and “in_Config” changes from the correct “value” in one step to “null” in another. No error messages seems to appear, so I wonder what might have happend? For me it looks like a bug. Using UiPath Studio 2018.3.3.

uipathDebug1
uipathDebug11924×1153 366 KB
Here I use Invoke workflow and “Import Arguments”, in_TransactionsItem and in_Config appears as they should. (Pressing “Step Into” between each image)
uipathDebug2
uipathDebug21923×1128 395 KB
Moving to “Process”, in_TransactionItem and in_Config still appears as they should. I’ve double clicked on in_TransactionItem to see more details about the content.
uipathDebug3
uipathDebug31919×1153 316 KB
One step further both in_Transaction and in_Config has turned to “null”.

Thanks for help!

2

In the Invoke Workflow Activity, Click on Import Arguments and assign the values of IN arguments.

3

Update: Trying to debug, I’ve changed the “Import Arguments” in Invoke workflow to Out and In/Out without any sucess. But when I now change it back to In (as it was from the beginning), the arguments turns to null just as I move into the Process (that is one step earlier than before). Is there something wrong with the Invoke workflow activity?

4

Now I got help from the UiPath support. Here was the problems:

  • In ProcessTransaction I’ve named two variables with the same name as the arguments I was passing through Invoke workflow (in_TransactionItem and in_Config).
    • Solution: By renaming the variables to for example TransactionItem1 and Config1 the new variables achieved the correct values.

What I take with me from this: when passing an argument to another process, make sure assigning the arguments to variables with different name from the arguments.

Cred to the UiPath support who solved the issue!

5

Hai,

Can anyone please help me with this, I am in this Process.xaml file created flowchart.
but then I am unable to understand this following things. kindly help thanks in advance.

• We need to check if the input data is valid, and if every value is a number. o To that end, we can use the Double.TryParse method, and then store the results as Double variables. o Use a Flow Decision activity and set the condition to Double.TryParse(CashIn, dbl_CashIn) AND Double.TryParse(OnUsCheck, dbl_OnUsCheck) AND Double.TryParse(NotOnUsCheck,dbl_NotOnUsCheck). o If it’s invalid, let’s use a Throw activity with a new BusinessRuleException object as the Exception property, as follows: new BusinessRuleException(“Input Data Invalid”). • If the Input Data is valid, add another Flow Decision to check if the value of dbl_CashIn is greater than 1000. o If it is, we use another Throw activity with a different Exception message. o If the value is less than 1000, let us use an Attach Window activity on the UiDemo main screen, three Type Into activities, and Click for the Accept button.

6

Hi vinutha15,

What do you mean by “unable to understand”? The page after show you a direct image of how the workflow is supposed to look like?

process
process818×846 46.6 KB