Yes, you got it right because for soapui working of $ is for different purpose. i think any moderator can help you in this
Click "Accept as Solution" if my answer has helped,
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Thanks and Regards,
@hazel_chua I am glad to see that you have found a workaround for this.
However, I would recommend that you open a support case regarding the $ symbol. This behavior might require deeper investigation on our side. The Customer Care team will surely help you with this.
Community and Education Specialist