Attachment input File Type validation not works in Bot Composer 2.1.1

Venkatesan Raji 1

I am using Bot composer v2.1.1

Based on my requirement, am trying to upload pdf file and it should allow only PDF

Hence I added validation(= equals(last(this.value).contentType , 'application/pdf')) to allow only PDF file as below,

But facing below error,

Please help me to resolve this issue.

romungi-MSFT 43,696 Reputation points Microsoft Employee

2022-09-21T11:14:23.883+00:00
@Venkatesan Raji Referencing the issue from bot composer repo which you raised as it contains additional details.
w.r.t the issue, I am not sure what would be the format returned for multiple files. Have you tried to use Output format to first for single file and then used the expression with just equals() adaptive expression?

equals(this.value.contentType , 'application/pdf')