function Set-TeamCityParameter {
<#
.SYNOPSIS
    Set a value on the TeamCity parameter for the job.

.DESCRIPTION
    The value set here will not be available to other processes until the build-step completes.
    You can use this to set %dep.*.parameter% style parameters on the build server.

.PARAMETER Name
    The name of the parameter to set.
    This value can start with env: or system: to affect those specific parameter sets.
    This value will get sanitized.
    This should not affect your end-value, but special characters may need to be validated on first-usage.

.PARAMETER Value
    The value to be set.
    This value will get sanitized.
    This should not affect your end-value, but special characters may need to be validated on first-usage.

.EXAMPLE
    Set-TeamCityParameter -Name 'rev.dep.*.SomeKey' -Value 'Hi mom!'
#>
    [CmdletBinding()]
    [OutputType([void])]
    param (
        [Parameter(Mandatory = $true)]
        [string]$Name,
        [Parameter(Mandatory = $true)]
        [string]$Value
    )

    $logLead = Get-LogLeadName

    $sanitizedName = ConvertTo-SafeTeamCityMessage -InputText $Name
    $sanitizedValue = ConvertTo-SafeTeamCityMessage -InputText $Value

    if ($sanitizedName.Substring(0, 6) -eq 'system:') {
        Write-Host "$logLead : Setting a TeamCity parameter on SYSTEM with Name [$($sanitizedName.Substring(7))]"
    }

    if ($sanitizedName.Substring(0, 6) -eq 'env:') {
        Write-Host "$logLead : Setting a TeamCity parameter on ENVIRONMENT with Name [$($sanitizedName.Substring(4))]"
    }

    if (Test-IsTeamCityProcess) {
        Write-Host "##teamcity[setParameter name='$sanitizedName' value='$sanitizedValue']"
    } else {
        Write-Host "$logLead : Would set a parameter on the build to Name: [$sanitizedName] Value: [$sanitizedValue]"
        # TODO: Do we want to use this to set local variables?
        # We could have ENV: or SYSTEM: set Env-Vars in Process/Machine, and others Set-Variable -Scope Script/Global
        # Not super-useful, maybe, but could be. Worth a thought.
    }
}