Azure Devops: Using dynamic variable names in customCondition

Question

I have created a pipeline variable dynamically using powershell script with variable name $ReleaseVariableName = "[$(Release.EnvironmentName)]_should_run_regression"

Now in next Job, I want to add a customCondition to check if value of above variable is "True".

I have tried couple of steps like using join,

• eq(join('_', @(variables['Release.EnvironmentName'], 'should_run_regression')), 'True')

but that doesn't work since I cannot declare array using @ in custom condition. So is there a way to use dynamic variable names in azure custom conditions?

PS:

• I am working with Classic UI so YAML solutions don't work.
• The step where I am using this custom condition is agentless job, so I can't use powershell scripts to read dynamic variable and set a Job level variable
• I have an alternative of creating different variables for each stage but that looks awful