variables - Create Varilable as Boolean in RDLC report to represent if dollar sign should be printed or not

Question

I am designing an invoice using rdlc file in visual studio (ssrs). Per invoice may have 1-10 transaction. We'd like to present the dollar sign of the amount on the first result only. The rest wouldn't have the dollar sign in front. How to achieve this in rdlc ? Im thinking of using a variable, that if it first, then set it to true. If true then print the sign. Though im not sure how to use variables in rdlc

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标签： variablesreporting-servicesreportreportingssrs-2012