PrintStringIntoString Not Inserting String Into Format

[mphook]

Describe the bug
A string is passed to the module PrintStringIntoString. The format is /%d/AF_%s%d.txt and the string being passed as input is Sum_Left_ACC_hdp.100

When executing the network, the string is not passed into the format, resulting in the output: /%d/AF_%d.txt

To Reproduce
Run the attached network and view the ReportStringInfo modules.
Example.zip

Expected behavior
The output string was expected to be /%d/AF_Sum_Left_ACC_hdp.100%d.txt

Version
v5.0-beta.Z.1

Desktop
Windows 10 Pro